A 22 year old guy with a concealed carry license

Poll - Total Votes: 55

Hero

Vigilante who should have called the Police.

Something else, please explain.

You can only vote on one answer.

Shot and killed a potential mass murderer.
Some on the anti gun side are calling him a vigilante.
What do you call him?

https://www.google.com/amp/s/amp.cnn.com/cnn/2022/07/17/us/indiana-greenwood-park-mall-shooting/index.html