When will this be unnaceptable to human beings as a society? Here is the thing, it is already unnaceptable to us as individuals that people live like cattle or wild dogs.
What is it that changes that to unnaceptable as a society? What would I do? I would have a task force in every city whose job was to patrol the streets, call it the Help Patrol or Help Task Force, wearing uniforms of peace, green with a red cross, and look for people that had hid rock bottom. I would then on the spot have food, medical help, and offer to help. It is important to realize that people that have been beaten down this bad, they may have at one time been psychologically able, but this could easily cause mental illness. The person(s) helping would have to be trained to know all these things, and probably woud need to speak at least Spanish as well as English, but the task force would have different languages bilingual agents.
100% unconditionally unnaceptable.