Five San Francisco thugs shot Mario Woods dead. They said he had a knife and wouldn't drop it — though he made no move to attack them. Maybe he did have one.

If I were in that situation, I might be in real danger, even if I were holding a gun — since I have no training, skill or experience in such a confrontation. However if five thugs with pointed guns think they are in danger from a man with a knife at his side, they must be incompetent.