He offered no evidence to back his assertions, and the president even seemed to invite supporters to make their presence felt: "Tonight, I understand, is MAGA NIGHT AT THE WHITE HOUSE???".
Secret Service used shields to push demonstrators off of Pennsylvania Avenue at one point, while the White House was on lock down temporarily. They were not only totally professional, but very cool.
"Nobody came close to breaching the fence".
Secret Service agents respond; Leland Vittert reports.
Trump posted a series of tweets commending agents from the Secret Service for protection before warning protestors they could have been targeted with "the most vicious dogs, and most ominous weapons".
Twitter's decision to flag Trump's tweet - the second time it has acted this week - came a day after he signed an executive order challenging the social media giant's protections against lawsuits as he accuses it of stifling conservative voices.
In subsequent tweets, Trump took aim at the demonstrators, claiming without evidence that they were "professionally managed so-called "protesters" who "had little to do with the memory of George Floyd". "Not their job." Nice!' he concluded.
In Washington, demonstrators gathered in a park across from the White House around dusk on Friday, briefly causing the compound to be locked down. The officer, Derek Chauvin, was sacked on Monday and charged with third-degree murder and second-degree manslaughter on Friday.
There were members of the press corps around the press entrance but they were just cleared out and have been brought back to the White House press briefing room.
While Trump "hides behind his fence afraid/alone", the mayor added, "I stand w/ people peacefully exercising their First Amendment Right after the murder of #GeorgeFloyd & hundreds of years of institutional racism".
The reference to unleashing "vicious dogs" was seen as yet another throwback to America's racial politics of the 1960s, like his use of the expression "when the looting begins, the shooting begins", on Thursday.
Video footage shows the officer losing his helmet just moments before the mob violently surrounds the man, with some apparently trying to kick and punch him.