Brandon Mitchell, known as Juror #52, told Minneapolis news outlets Monday that he attended the Aug. 28 march in Washington, D.C., featuring speeches by George Floyd's siblings, while a photo circulating online shows him with two cousins wearing the T-shirt as well as a "Black Lives Matter" hat.

What may come back to haunt the prosecution is that Mr. Mitchell, 31, answered "no" when asked during jury selection if he had attended any protests for George Floyd.

"I think they asked if I attended any protests for George Floyd or anything for police brutality. My answer was no because I hadn't," Mr. Mitchell told WCCO-TV in Minneapolis. "This particular march was more so for voting, voter registration. Getting people out to get out and vote for the presidential election that was upcoming a couple months afterward … This was the only thing I attended."