If you refuse to leave then, I suppose you might get arrested for vagrancy or trespassing (both of which are perfectly constitutional things to get arrested for). (politics.stackexchange.com)
Sadly there is an epidemic of rough sleeping and vagrancy in #Windsor @RBWM. (premierchristianity.com)
The legislation is akin to the nineteenth century vagrancy laws that were used to punish and imprison the poor. (slaw.ca)