The message pretty clearly states that the visible presence of the homeless is a crime against the OP that leads to vigilantism (i.e., attacks on the homeless). This kind of eliminationist rhetoric is common on this site.
It's not by accident that everyone in my immediate social circle carries a weapon of some kind now. The existential threat from both the state and other citizens grows daily.
It doesn't help that moderation is almost non-existent, aside from when VC's get put under blast, or when . Asking for sources for ridiculous comments (eg: Dropbox laid off people in order of performance) gets flagged, then removed, but off-topic humor in bad taste remains.