But it's not because of the number of people present, rather because of the people you will have to spend your time with. This is not the America with the same people we had 50 years ago. America is changing, and chnaging for the worse due to its inane immigration policies or lack thereof.
True. Were I in such a situation I'd first try to help my family, followed by relatives, friends and the rest of my own. Having helped those close to me and my own kind, I don't think I would have time to help strangers, sadly. But if the occasion arose I would lend a hand to a stranger/foe.