I do know it's more common than you think, I also know none of my close friends do it. Some smoke weed or do LSD occasionally, but not cocaine.
A friend of a friend was assaulted in D.C. and needed stitches but is otherwise OK. The victim is a first generation Chinese American and the attacker was apparently yelling "****ing Chinese!" Thankfully it was caught on security camera and bystanders got the attacker's plate number as well.