no i think that governements are what are holding people back from total chaos, where people are killing eachother.
There wasn't even total chaos and everyone killing each other pre-government when people wandered round in tribes. It wasn't happening in Australia before the white man came along. (The indigenous population plummeted AFTER government was established).
So, really, this is just hysteria.
Security is always going to be required. But really, not everyone thinks raping and unprovoked murder is OK. In fact, most don't.