In certain regions of UK and USA (since when were American more likely to give care about anyone but themselves, homeless or othewise?) cars would be more likely to be set alight if people were living in them. And not just by kids. Sad but true. But even back in the Depression years of the thirties, Hobos and other vagrants faced the violence of an intolerent society which all migrants (individuals & cultures) have faced over the millenia.

Mostly though, people are okay. As ever, exceptions prove rules.