No shit, I watched the video in NYC of the guy that helped a lady that was being robed of her purse. The perp stabbed him, she ran away, he stumbled about a block where this video captured him laying on the sidewalk for an hour while many people just stepped over him. By the time someone called police he was dead.
If you don't carry legally and help yourself you are fucked. I have a wife and kids to think about. If you want to be Batman, put on a costume, or go be a cop.