I can understand that. Running out of toilet paper at a "critical moment" can be traumatic, and anyone who has gone through that may be expected to take advantage of every opportunity that would help in avoiding a repeat.
Still, once they've loaded up on Pooping Gear, they should go out for some good stuff---at the fancy malls, where the rich folks live, etc. There is also no shortage of guns in the USA; so why not give some lead to a few coppers.