Just like Mr.Armstrong said,I also think that the homeless people are cool.
They are living by reusing the waste and the things that are extra in this society.
One of my friend in my highschool actually lived with the homeless for 2 weeks using his summer vacation.
At first, he said that he had a struggle looking in the garbage and getting looked at by people, but he said that once he got used to it, the homeless life is totally free, and also said that there are some hints in their life to solve the global warming.