Claim: President Trump says thugs in uniforms intent on inciting unrest have been seen travelling around the United States on a plane

Verdict: There have been no reports that this incident took place, and the White House has provided no evidence

President Trump told Fox News earlier this week that someone had seen "thugs... in dark uniforms" on a plane destined for Washington DC intent on doing damage at the Republican National Convention last week.

A day later he told reporters that the witness saw an "entire plane filled up with the looters, the anarchists, rioters, people looking for trouble".

The president was on his way to Wisconsin where days of protest followed the police shooting of a black man, Jacob Blake, in the city of Kenosha.

The president offered to refer journalists to the witness but said he would check with the person first. No information of such an event has come to light.

When pressed on the president's claim during an interview on CNN, US Attorney General William Barr said he didn't know "what the president was referring to".

The United States has the very best and very worst of everything imaginable. It has had and does have some of the greatest talents and finest minds in history. They also have, more than anybody else, the worst of them. Nothing Trump says surprises or that his ignorant followers believe it regardless of how stupid it is.