Four police officers were injured in Portland on Saturday and a man 'intentionally' drove his SUV into a crowd of protestors in Virginia as 'No Kings Day' protests descended into chaos across the country. 

The widespread violence broke out following President Donald Trump's birthday military parade in Washington D.C. and anti-Trump marches across the country. 

It was a scene of chaos in Portland as hundreds of protesters clad in black clashed with federal officers at the US Immigration and Customs Enforcement office.

Federal officers decked out in tactical gear deployed smoke, tear gas, flash grenades and other projectiles as demonstrators threw fireworks and water bottles in response.

Some even used a stop sign to smash through one of the doors to the ICE facility. 

Earlier in the day, several thousands had gathered downtown for a number of 'No Kings' protest across the city but it was only after 6pm that the protests grew violent.

Joseph R. Checklick Jr., 21, drove his SUV through a dispersing crowd in a parking lot in northern Virginia, which led to him 'striking at least one person with his vehicle,' police said in a statement.

The protest took place throughout Saturday afternoon in Culpeper, a small town roughly 70 miles from Washington, D.C. 

PORTLAND, OREGON: Tear gas surround tents outside the U.S. Immigration and Customs building during a protest in Portland, Oregon on Saturday

PORTLAND: Earlier in the day, several thousands had gathered downtown for a number of 'No Kings' protest across the city but it was only after 6pm that the protests grew violent

PORTLAND: Law enforcement agents stand after tear gas was deployed outside the ICE building in Portland, Oregon

Across the country, there have been some 2,000 'No Kings Day' protests, with attendees pushing back against what they describe as Trump's march toward authoritarianism on issues such as immigration enforcement, civil rights and cuts to the federal government through DOGE.

There were huge, boisterous crowds marching, dancing, drumming, and chanting shoulder-to-shoulder in New York, Denver, Chicago, Austin and Los Angeles, some behind 'no kings' banners.

 In some places, organizers handed out little American flags while others flew their flags upside down, a sign of distress.  

Mexican flags which have become a fixture of the Los Angeles protests against immigration raids, also made an appearance at some demonstrations Saturday.

Atlanta's 5,000-capacity event quickly reached its limit, with thousands more gathered outside barriers to hear speakers in front of the state Capitol. 

TUCSON, ARIZONA: A protester sprays two Tucson Police Department officers with a chemical irritant as they take a person into custody during a 'No Kings' protest in Tucson

LOS ANGELES: A LAPD officer points his rubber bullet gun at the crowd during a march downtown against Trump

LOS ANGELES: Officers deploy tear gas, rubber bullets to clear protesters in downtown LA

DETROIT: A few thousand Metro Detroit activists marched from Clark Park to a Detroit Federal Building near downtown Detroit to show support for the immigrant community

DETROIT: The protestors marched to denounce the rise of authoritarianism, the ongoing ICE raids, and to show solidarity with Los Angeles after President Trump deployed the National Guard and U.S. Marines to in response to large scale protests

DETROIT: Thousands took to the streets in Detroit to show their dissatisfaction with Trump 

SEATTLE: Crowds gather in Cal Anderson Park prior to the start the 'No Kings' Seattle

SEATTLE: Mina Carroll has their face painted like an American Flag to march in the 'No Kings' protest 

AUSTIN, TEXAS: A person holds a sign reading 'America is the Land of Immigrants' as demonstrators protest the Trump administration during the 'No Kings' national rally outside the State Capitol in Austin

AUSTIN: A person holds a sign reading 'Deport Trump to Hell' as demonstrators protest the Trump administration during the 'No Kings' national rally outside the State Capitol in Austin, Texas

AUSTIN: Peaceful protestors tragically and terribly confront and berate stoney faced Marines and National Guard at the Federal Building in downtown Los Angeles

CHICAGO: Thousands of demonstrators gathered at Daley Plaza, holding up signs and vocalizing slogans as they participated in a large march across downtown Chicago 

CHARLOTTE, NORTH CAROLINA: Thousands of demonstrators flood the streets of Charlotte,  to protest against  Donald Trump

CHARLOTTE: Thousands turned out to protest against Trump 

CHARLOTTE: One woman could be seen dressed up as Trump depicted as a king

CHARLOTTE: Thousands of demonstrators flood the streets of Charlotte, North Carolina

HOUSTON: People gather outside Houston City Hall for a planned 'No Kings protest'

PORTLAND: Demonstrators cross the Hawthorne Bridge as they take part in the 'No Kings' protest, in Portland

PORTLAND: Demonstrators march down SW Naito Parkway towards Hawthorne Bridge

PORTLAND: Demonstrators take part in the 'No Kings' protest

PORTLAND: Portland's demonstrators saw protestors walk across the Hawthorne Bridge 

A rally at the Texas Capitol in Austin went off as planned despite state police briefly shutting down the building and the surrounding grounds after authorities said they received a 'credible threat' to Democratic state lawmakers who were to attend.

Lawmakers showed up anyway and said they were in contact with safety officials to make sure the protest wasn't disrupted.

Ten minutes before the protest was set to begin, a man was arrested in connection to the threats made this afternoon, a spokesperson with Texas DPS told DailyMail.com

A state trooper with DPS arrested the man in La Grange, a city 65 miles southeast of Austin.

Local media later reported that when protestors reached the Austin Convention Center, police officers were seen with riot gear and armed with tear gas canisters. Police were seen deploying chemical agents on Trinity Street.

However, the protests have begun to disperse peacefully, with demonstrators beginning to make their trek home around 9:30pm local time. Authorities urged people to stay on the sidewalks.

Over in Los Angeles, police there deployed less lethal munitions as protesters hurled concrete, rocks and fireworks at officers followed a day of mostly-peaceful protests in the City of Angels. 

Police on horseback pushed crowds back as law enforcement fired tear gas and flash-bang grenades hours ahead of the evening curfew.

A police spokeswoman said a 'small group of agitators' had begun throwing rocks, bottles and fireworks at officers, prompting the decision to order the crowd to disperse.

One disturbing piece of footage saw and elderly man pushed backwards by police into the crowd who luckily broke his fall.  

LOS ANGELES: Anti-Trump protestors in downtown LA confront US Marines and National Guardsmen on Saturday, the same day President Trump's birthday military parade is taking place

LOS ANGELES: A young protester carries a combination Mexican and U.S. flag during a 'No Kings' protest in downtown Los Angeles 

LOS ANGELES: Demonstrators standoff against law enforcement on horseback during a protest Saturday in Los Angeles

LOS ANGELES: Police fired tear gas at anti-Trump protesters in Los Angeles, which has seen a week of such demonstrations

ARLINGTON, VIRGINIA: Protesters hold a 'No Kings' rally on a highway overpass in Arlington

PHILADELPHIA, PENNSYLVANIA: People protest in Philadelphia as part of the No Kings Rallies at Love Park

PHILADELPHIA, PENNSYLVANIA: Around 80,000 people marched through Philadelphia on Saturday for the 'No Kings' protest

In Philadelphia, thousands gathered in front of City Hall, waving signs and listening to a Native American drum circle before marching through the streets. 

An estimated 80,000 to 100,000 people took part.

There were numerous speakers who delivered speeches outside Independence Hall, including the eldest son of civil rights leader Martin Luther King Jr.

Martin Luther King III, an activist like his father, told protestors they were gathered to declare that 'We the people still believe in democracy.'

'We still believe in a nation without kings, without tyrants, without rulers who place themselves above the law,' he said to an applauding crowd.

'We are here to say this land belongs to the people, not to the monarchs, not to the autocrats, not to strong men, but to the people. You.'

The protest concluded with an address by one of the lead organizers for the nationwide movement.

Ezra Levin, a co-executive director of the progressive group Indivisible, thanked the people who showed up to make their voices heard.

'Today, we are doing the most quintessentially American thing you can think of. We are showing up peacefully, together, proudly finally to say

freedom means something. Justice demands action and that we are not done fighting for the country we know is possible,' Levin said.

Levin concluded by leading the crowd in one final chant: 'How many kings?!' he asked.

'No kings!' they responded before cheering.

PHILADELPHIA, PENNSYLVANIA: Despite 80,000 taking part there were no reports of arrests

SAN FRANCISCO, CALIFORNIA: Thousands of anti-ICE  demonstrators marched to the City Hall for nationwide 'NO KINGS' protest in San Francisco

SAN FRANCISCO: People march down Valencia Street to protest the Trump administration during the 'No Kings' national rally in San Francisco, on the same day as President Trump's military parade in Washington, DC

CLEVELAND, OHIO: A protester preaches at the 'No Kings Protest' on Saturday in Cleveland

CLEVELAND, OHIO: A protester holds a sign at the 'No Kings Protest' on Saturday

CLEVELAND, OHIO: Protestors walk the streets of Cleveland at the 'No Kings Protest'

In Los Angeles, a curfew went into effect for a small portion of downtown LA just as night fell while the protests continued. 

The curfew started at 8pm and will last until through until 6am. The curfew area does not cover the whole city, but just one square mile in downtown. 

Demonstrations in Los Angeles against  Trump's immigration crackdown have served as a flashpoint for protests nationwide and prompted Trump to deploy military troops to the region, sparking further outrage.

Mass protests as part of the national 'No Kings' movement proceeded largely peacefully in LA, but there were some clashes with law enforcement downtown this evening as officers tried to clear remaining protesters in the hours leading up to the curfew.

In all, seven officers with the LAPD were injured during confrontations with demonstrators, though none of the injuries were severe enough to warrant hospitalization, LAPD Chief Jim McDonnell said.

Saturday night's curfew was the the fifth consecutive night where Mayor Bass has called for one.

In Utah, one person was critically injured during a shooting in Salt Lake City when gunfire erupted during the 'No Kings' march. A person of interest is in custody, police said.

The march of several thousand people has just passed the downtown federal building before people started running, and responding officers told people to immediately take shelter. 

Video feeds showed several police standing in the street and yellow tape used to cordon off an area of at least a half a block.

HOUSTON, TEXAS: People gather at the 'No Kings' nationwide demonstration on Saturday in Houston

ATLANTA, GEORGIA: A demonstrator holds a sign during a 'No Kings' protest, Saturday in Atlanta

WASHINGTON DC: A demonstrator carries an American flag upside-down near the White House during a protest taking place on the day of the military parade

WASHINGTON DC: Some protesters took aim at the $45 million military parade in Washington on Trump's 79th birthday

LOS ANGELES: Raids by Immigration and Customs Enforcement (ICE) agents sparked deep anger in Los Angeles

DENVER, COLORADO: In Denver one sign called Donald Trump a clown

Many signs mocked President Donald Trump and his attacks on undocumented migrants

'No Kings' organizers said protesters gathered in hundreds of cities with large crowds seen in several cities.

Organizers said they were protesting against Trump's dictatorial overreach, and in particular what they described as the strongman symbolism of the parade.

'I think people are mad as hell,' Lindsay Ross, a 28-year-old musician, said in New York, where tens of thousands of people rallied.

Some protesters targeted Trump's Mar-a-Lago estate in Palm Beach, Florida.

'I think it's disgusting,' protester Sarah Hargrave, 42, said in the Washington suburb of Bethesda, describing Trump's parade as a 'display of authoritarianism.'

In Washington, hundreds protesting Trump carried signs with messages that included 'Where´s the due process?' and 'No to Trump´s fascist military parade' as they marched toward the White House.

A larger-than-life puppet of Trump was wheeled through the crowd, a caricature of the president wearing a crown and sitting on a golden toilet.

Other protesters waved pride flags and hoisted signs, some with pointed messages such as 'I prefer crushed ICE,'. 

Other messages included 'The invasion was HERE Jan. 6th, NOT in L.A.' and 'Flip me off if you´re a FASCIST.'

PHILADELPHIA: Demonstrators march down Benjamin Franklin Parkway during the 'No Kings' protest, in Philadelphia

MICHIGAN: Demonstrators at a 'No Kings' protest outside the Michigan Capitol in Lansing, Michigan

At the end of a day of protests, President Trump hosted the largest US military parade in decades on his 79th birthday.

Trump hailed the United States as the 'hottest country in the world' after watching tanks, aircraft and troops file past him in Washington to honor the 250th anniversary of the US army.

Trump largely avoided his usual domestic political diatribes in an unusually brief speech, and instead focused on praising the US army, saying that they 'fight, fight, fight, and they win, win, win.'

The last such parade in the United States was at the end of the 1991 Gulf War.

When it came, Trump stood and saluted on a stage outside the White House as tanks rumbled past, aircraft roared overhead and nearly 7,000 troops marched past.

Troops and military hardware from different eras of US history passed by, with an announcer reeling off victories in battles with Japanese, German, Chinese and Vietnamese forces in past wars.

The army said the parade cost up to $45 million.

But while the crowd sang 'Happy Birthday' and there were occasional chants of 'USA! USA!', the atmosphere was less intense than one of the barnstorming rallies that swept Trump to power.

The White House said that 'over 250,000 patriots showed up' for the event, without providing evidence. Communications Director Steven Cheung described the 'No Kings' protests as a 'complete and utter failure.'

The last such military parade in the United States was at the end of the 1991 Gulf War

Troops march along Constitution Avenue during the military parade in Washington

A military parade commemorating the Army's 250th anniversary and coinciding with President Donald Trump's 79th birthday in Washington

U.S. Army 2nd Lt. Hayle Mayer, left, and Corporal Addison Merrell, watch fireworks at the Washington Monument while attending a military parade commemorating the Army's 250th anniversary and coinciding with President Donald Trump's 79th birthday

President Donald Trump, first lady Melania Trump, and other guests stand for the National Anthem, during a military parade commemorating the Army's 250th anniversary

The National Anthem is performed as President Donald Trump his birthday parade

Some of those taking part marched in civil war outfits 

People on the lawn around the Washington Monument as President Donald Trump attends the military parade 

In his address to the parade, Trump sent a warning to Washington's adversaries of 'total and complete' defeat, with the United States increasingly at risk of getting tangled up in Israel's conflict with Iran.

'Time and again, America's enemies have learned that if you threaten the American people, our soldiers are coming for you,' Trump said.

Trump had openly dreamed since his first term as president of having a grand military parade, of the type more often seen in Moscow or Pyongyang than Washington.