I recently posted (actually overposted as I get verbose alot … alot. Sorry. Trying to holdback.) on an OP article regarding use of force. There was a comment made about going to a crowded area, and presenting arms, so there would be witnesses if the situation went downhill.
I wondered if someone, not the commentator of the above, would fire from a crowd for cover using people as shields or prevent being shot at. Taking hostages is a step away.
My suggestion for an article: What types of people to avoid in the SHTF.
People who appear to be friends or allies but will turn on a dime against you or leave you holding the bag when a situation arises. People who talk bravado but are weak inside. What would the character traits to watch out for?