I believe there are three kinds of homeless.  One kind is honestly schizophrenic.  Another is addicted to drugs and/or alcohol.  Then there is the third type that has legitimately fallen onto hard times not related to mental illness or addiction.  The third type is the kind that cooperates with the outreach workers and goes to a shelter.  The first two kinds are the ones saying they will move somewhere else and hell no to getting an kind of help.  What a sad world it is when the crazy have a right to sit on the sidewalk screaming and swearing at everyone walking past or else the ones poisoning their brains with substances legal or illegal. No drugs or alcohol allowed in the shelters.  Remember that when you see these homeless on the 6 O' clock news and they refuse to be helped.  I say it is time to drug test all occupants of these illegal encampments.  Find anything in them and treat them like everyone else possessing illegal substances.