Allowing for countless wanna-be vigilantes to imagine in their own mind being the 'hero'.
Vigilantism is not the answer.
At the WalMart shooting the other day, so many people drew weapons that the cops reviewing the security footage couldn't tell which of the armed suspects to track. As the law enforcement people said, it was a major stumbling block to the investigation following up on all the wrong people and no wonder what with all those guns in all those people's hands.