[En Passant]

According to your "reasoning," it is a person's fault for anything that happens to him. "Doing something wrong" is too broad.

For example, I leave my windows unlocked at night and someone decides to break into my house and kill me for no reason. Am I wrong in this case becuase I failed to lock my windows?

Edit: Also, you made your silly comment before you even knew the facts of the case. You passed judgment probably becuase he was a black athlete with a reputation of being a thug, and now you're trying to cover your ass.