Joseph told CNN he decided to wear the cap and gown "to put positivity in the world.""People look at my people like we're down, like we don't have anything," he told CNN. "I just don't think we're respected enough," adding that he wanted to show that people like himself are achieving their goals.Floyd died in police custody after then-Minneapolis police officer Derek Chauvin held his knee on Floyd's neck while pinning him down. Chauvin was later arrested and charged with second-degree murder. The other three officers who were present at the time of Floyd's arrest were charged with aiding and abetting second-degree murder and with aiding and abetting manslaughter.