I was going to ask if Jesus was holding an assault weapon, or perhaps a round of ammunition, maybe even just a fired blank round, or maybe he was just holding his dead fingers in the shape of a gun like kids on the school yard do. Any of those would get you tossed out under the bizzaro world “zero tolerance” policies that some schools have brought into force.
It’s just a sign of the times. No one is willing to make a decision on a local level, so things like this are left up to a mandate of some kind, generically written and designed to cover just about everything one can think of.