1. type of event/crowd
Different age groups act differently.
4. intoxicated patrons
Drunk adults at least can legally be drunk, but what do you do with drunks under 21?
why not consider drug use too? if it's illegal, its illegal for both the over-21 and under-21 crowd-- no differences to be explored.
6. handling of physical disturbances
Ideally, issues would be handled before the become violent.
Protocol versus human morals:
teen getting beat up while 3 security men watch