A police cruiser has knocked protesters to the ground in New York City as protests over the death of George Floyd continue to rage.
A shocking video posted on Twitter on Saturday night appears to show the NYPD vehicle being deliberately driven into crowds in Brooklyn.
It comes on the fifth day of nationwide demonstrations demanding justice after the 46-year-old black man was pinned to the ground by police officers in Minneapolis.
Protesters in New York can be seen banging on the hood of the vehicles and pelting it with objects, and a man later jumping onto the car while onlookers scream.
Another video shows officers using batons and shoving protesters down as they made arrests and cleared streets.
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"Our country has a sickness. We have to be out here," said Brianna Petrisko, among those at lower Manhattan's Foley Square.
"This is the only way we're going to be heard."
As anger mounts across the US, security barriers were also torn down outside the White House on Saturday night.
Demonstrators were left 'gasping for breath' and 'unable to see' after officers fired tear gas into the crowds, which converged outside Donald Trump's doorstep for the second day in a row.
Eyewitnesses say rubber bullets and pepper spray have also been used as tensions between the Secret Service and demonstrators escalated.
A dumpster has also been set alight, according to Buzzfeed News reporter Kadia Goba, while one protester is said to have thrown a tear gas canister at police.
Up to 1,000 people are said to have descended on the White House, chanting "hands up, don't shoot" and "I can't breathe," according to NBC News.
President Trump warned on Twitter on Saturday morning that demonstrators breaching the fence would be met "by "vicious dogs" and "ominous weapons."
Meanwhile in Minnesota, the full National Guard has been activated for the first time since World War Two after four nights of civil unrest that has spread to other US cities.
State governor Tim Walz said the deployment was necessary because he expected Saturday night's demonstrations to be the fiercest so far.
From Minneapolis to several other major cities including New York, Atlanta and Washington, protesters have been clashing with police as anger mounts over the treatment of minorities by law enforcement.
Policeman Derek Chauvin, who was dismissed from the police department with three fellow officers the day after the fatal encounter, has been arrested on third-degree murder and manslaughter charges over the incident.
Earlier today it emerged a policeman was shot dead and a second wounded amid protests in Oakland, California.
The protests come amid years of 'Black Lives Matter' activism, following decades of pushing for change by America's civil rights movement.
