You got one thing right: most people would be terrible to be trapped in a confined place, because people behave irrationally when presented with something they fear. Like any animal with basic survival instinct, they want to get the hell away from whatever is stressing them out, and if the option to run away from it isn't on the table, they'll resort to the next best solution; neutralizing the perceived threat. People will willingly crawl over and trample other people to get away from a fire, and crush themselves into fire escapes trying to get out; people will never form orderly lines when there's shit exploding next to them, they'll all go fucking crazy and cause even more chaos to ensue.