Gypsies. (With that, I don't exclusively mean the Romani people, but traveling groups of families.) They're dirty, they steal, they have no respect for other people's... anything.

I work at a camp site, so I meet these groups every year. They travel through, doing shoddy work in construction. While staying at the camp site, they never clean up after themselves. Not around their trailers, not in the common rooms. They completely take over the laundry room and kitchen and bully everyone else out.

This spring, a group of English/Irish families doing paving work stayed with us. A couple of the highlights were when they had thrown feces in the play house, their completely irresponsible handling of (inflammable) gas bottles and that they dropped their children off at malls to steal. When police or security caught the children stealing, the parents claimed the children weren't theirs.

Of course, they didn't pay either.