Y: "There are too many homeless here, it feels unsafe."
A: "How dare you! Those are human beings!"
Y: "Why can't they stay in shelters?"
A: "They feel unsafe, there are too many homeless there."
What's tragic is that you think warehousing people who are overwhelmingly addicts, or mentally ill would be workable. The term, 'Bedlam' springs to mind.
Besides, it's almost like different homeless people are... different... people.