Updated: May 8 2021, 11:20 ET Invalid Date, DEREK Chauvin trial juror Brandon Mitchell wore a George Floyd inspired Black Lives Matter shirt multiple times before he was involved in the case. Mitchell has been accused of lying to infiltrate the disgraced killer cop's trial - but claims to not even remembered putting the shirt on. 6 6 Chauvin was convicted of murder in AprilCredit: The Mega Agency Chauvin attorney Eric Nelson is using the shirt to argue that the landmark trial show be overturned in part due to misconduct by Mitchell. Mitchell was one of the 12 jurors who convicted ex-Minneapolis cop Chauvin of second and third-degree murder and manslaughter over the killing of George Floyd.