does mean you're not going to get shot by rampaging hill billies.
And you're going to get stabbed by rampaging chavs
There isn't going to be any rampaging hill billies. That has never happened in the history of America in a situation that wasn't politically motivated like the freestaters, KKK, or civil war. When the welfare checks stop arriving there will however be riots in the inner cities (which explode at any excuse, I can give you a long list of riots) and that's all I would expect.
If everything does collapse the UK/US will end up looking like Brazil/South Africa/Mexico/former soviet bloc/etc.
Basically business as usual but with a much lower standard of life and tons of really poor people. Crime will sky rocket. Kidnappings will be common. The police will be corrupt as ****. Rich people will live in gated compounds and drive armored cars. Middle class neighborhoods will have private security patrols.
I don't have much of a problem with that as long as I can be armed 24/7.