Gunman didn't kill them - victimhood mentality did. If they rushed him all at once, he'd be dead there on the spot. Yes, some of them would probably die, but so much less than now! But yeah, in case of a mass shooting you need to call 911 or whatever the number for you country, back yourself into a corner and wait there for the police to "draw a chalkline" and pack you into a body bug. Great, thanks, call again!