Denver has its share of vagrants. The rule is evidently that you can illegally camp on the sidewalk and poop in the gutter until a lot of people complain. Once dozens or hundreds of people complain – they don’t publish what the requisite number is – the city will tell the vagrants they have two weeks to shuffle down the road to trash some other site.
What the vagrants then do, naturally, is leave for a few days and then come back to the same place again, where they stay again until enough people complain again and they get the two weeks’ notice again and then they leave for a few days again. I’d say it’s a case of rinse and repeat, except these feral humans have not seen a rinse in months.
The vagrants are offered shelter in several vagrant shelters, but typically refuse to go there unless it gets very cold, which in Denver it fortunately sometimes does.
The city council sees this as a problem, but not in the way you would assume. The problem they see is not that there are too many vagrants panhandling and pooping up the downtown. It’s that there are too few.