Anthony, Wild animals, and to a lesser extent dogs, don't know any better about where to defecate. Humans, even the inebriate misfits, have had training about where and how to relieve one's self. When the squatters do otherwise they simply are demonstrating the training didn't matter because they don't care. The squatters are making a choice: they'd rather beg, steal and be drugged than work and adhere to social and healthy norms.