So much for turning the other cheek, though. Perhaps a deeper look into the scripture would show it was not a call for suicide. This could be the start of something interesting. Kudos to the security guard for doing the right thing.
The old Greek term for “strike” (to which one is to “turn the other cheek”) is more akin to insult, slap, or other minor harm - distinct from grave physical injury.
When directed to go out on their own without Christ’s immediate physical presence, they were told to take their wallets, bags, ... and swords.
Or a call to let others be slaughtered.
I don't think Jesus' comment about turning the other cheek meant that he wants his church's members to just meekly allow themselves to be murdered en masse by a lunatic who apparently had "issues" with Christians or Christian churches. A slap on the cheek won't take a young mother away from her children for the rest of their lives, but an armed lunatic's bullets would.
God speaking through Moses instructed Jewish rulers and judges to punish evildoers by taking life for life, eye for eye, tooth for tooth. IIRC the Old Testament book of Exodus contains a passage of scripture that authorizes using deadly force against burglars if they break into your home after dark to steal valuables or to do you harm, and that scripture was written by the same God except in human flesh who talked about turning the other cheek 14 centuries later.