Floyd, a black man, died after a white police officer knelt on his neck for eight minutes.
His death caused outrage across a nation that is politically and racially divided during a polarizing presidential campaign, and has recently been released from strict stay-at-home orders during the coronavirus pandemic that threw millions out of work.
"They [the Secret Service] let the "protesters" scream and rant as much as they wanted, but whenever someone got too frisky or out of line, they would quickly come down on them, hard - didn't know what hit them", Trump said in a tweet. "These people are ANARCHISTS".
The president also said governors were slow to call on the National Guard.
Trump, the source said, repeatedly urged the participants to act more forcefully, and also urged the officials and governors not to be weak.
And on the specific issue of police violence, the president made headlines for calling National Football League players protesting such violence "sons of bitches" and for defending the Charlottesville marchers who demonstrated in favor of Confederate memorials. The smoke mixed with billowing clouds of tear gas as police sought to clear from the area crowds chanting "George Floyd".
In a statement Sunday, Barr said that "the voices of peaceful and legitimate protests have been hijacked by violent radical elements" and said "federal law enforcement actions will be directed at apprehending and charging the violent radical agitators" who break federal law.
Demonstrators returned Sunday afternoon, facing off against police at Lafayette Park into the evening. The driver was pulled from the cab and beaten by protesters before police took him into custody. No protesters appeared to be injured, and the driver was arrested.
Apple, along with several other major retailers, temporarily closed most United States stores - which were just emerging from a two-month lockdown to address the coronavirus pandemic - and California said it was shutting government offices in crowded areas as a precaution.
Yet thousands still marched peacefully in Phoenix, Albuquerque and other cities, with some calling for an end to the fires, vandalism and theft, saying it weakened calls for justice and reform.
Nearby in Santa Monica, not far from a peaceful demonstration, a group broke into a Gap and a Vans sneaker store, where people walked out with boxes of shoes.
Former Minneapolis police officer Derek Chauvin in a booking photograph (L) and Chauvin, when still an officer (R).
It was already the 6th day since the death and arrest of Floyd in the hands of police authorities.
"It is their responsibility to police their streets", she said.
Some of the protests have turned violent, prompting the activation of the National Guard in at least 20 states.
- Trump says he will designate Antifa as a terrorist organization
- Donald Trump: U.S. to designate Antifa as terrorist organization
- L.A. Mayor Imposes Curfew Following Protests Over Dead Of George Floyd
- Derek Chauvin Charged with Murder of George Floyd
- Black Lives Matter protest, large crowd gathers in Kalamazoo
- Joe Biden To Headline Texas Democrats' Virtual Convention
- Iran says it will continue nuclear work despite USA sanctions
- Premier League to restart June 17
- SpaceX launch: Historic Elon Musk mission on target for lift-off
- Android 11: The Beta Launch Show Delayed Amid Protests in the US