The ethics of being homeless: 
First, the stench. Hygiene.
Second, often lewd behavior, exposing their genitalia in public. 
Third, unpredictability, making women and children feel unsafe.
Fourth, there are apparently some homeless people who do encampments who actually do have a gun or a pistol… Uncertain whether it has ammunition or not, but still… Can you imagine if you tried to clear out a homeless encampment, and the dude with a gun shot and killed you? Leaving your beautiful wife and precious son to grow up without a father?
Guns?
I think maybe being in America, the logical thing should just be assumed that everyone has a hidden gun on them.