We've got thousands of square miles of perfectly legal places to camp. They just don't happen to be in the prime real estate that holds our city parks. One also does not have the right to trash the place no matter where. Unfortunately, our bums, emboldened by the friends of homelessness, can't be bothered to carry their rubbish to our plentiful garbage cans and they often aren't even toilet trained. 

As someone who has picked up and disposed of more trash from homeless people than I have generated myself (by a factor of over five), I'm fresh out of sympathy for these parasites. Every ne camp that is sanctioned brings us ever more theft, ever more trash in our public space and ever more human feces in our parks, streets and yards. Time to bring back chain gangs.