ABC says it received suicide note from Virginia gunman who killed 2 on live TV

He says has suffered racial discrimination, sexual harassment and bullying at work. --He says he has been attacked by black men and white females. --He talks about how he was attacked for being a gay, black man.

“Yes, it will sound like I am angry...I am. And I have every right to be. But when I leave this Earth, the only emotion I want to feel is peace....” .... http://abcnews.go.com

.... So what medications was he on?