6. As the Not Responsible for Anything crowd would say:
The only killings that count as murder are non whites killing anyone, because, as fellow DU'er radhika said on another thread: "White men don't kill people, they just stand their ground."
I heard some gun nut say (out loud) that the first restrictions on weapons were the Jim Crow laws. After all, the KKK couldn't have terrorized an entire race if "coloreds" had been able to exercise their second amendment rights.