A few of the comments said the attacker was on PCP, it's not funny, and it reflects nothing on society. If you think someone getting their face chewed off is funny, you have some serious issues.
different news orgs have been 'claiming' different things, one said a 'designer version of LSD', another said PCP... my guess its all BS until they do an official autopsy report on person. For all we know he could just be old fashion crazy.