Thats about one of the only things I could think of that would excuse inaction. That said, as to the feel comfortable thing.
Who would? There are more important things than comfort sometimes and I doubt well dressed college punks would do more than run screaming when seriously confronted, mob or not. They are cowards by training and by nature.
Blacks got to their position by threats, not action, most talk crap and nothing else. Some do. Gang bangers. These were not them in Manhattan. GBs can be dealt with in other ways.
True, but even there you'd have to know exactly what you were dealing with. For example in the case of MS13 (which was operating just six blocks from my last high school teaching assignment) they favor the use of a machete on a victim and if you back them down they will pursue you and your entire family all the way to uncles and aunts many times removed without rest or mercy until everybody is dead. So you'd need to go all MACK BOLAN on them if you decide to engage and any of them live to tell the tale. They'd never stop and they have an unlimited supply of soldiers....