Yeah, there is a lot of homeless people that are.. well.. don't have too much going on in the head.
At my family restaurant in Tempe we see homeless people kind of often (digging through our trash can.. hey, free food, you're at a restaurant so that's the right place to be digging in). It's really sad, but some of them are kind of.. not there. We had this one throw our newspaper stand through one of our stained glass windows someone made for us a long time ago. It happened during the night. Luckily nothing was stolen but the window had to get replaced.