Remember, it was a 20 year old snot , who stole firearms from his mother, then killed her, who did this.
The only way this shooting might have been prevented was if there were no guns at all in America.
That simply isn't going to happen.
Hey, if it make you "feel good" to volunteer at a charity or hold the door for someone, then do it. No need to virtue signal, Larry..
BTW...since when is it heroic to get shot down by a 20 year old snot?