China by far. Our homeless have iPhones, their homeless get run over by trucks and public busses without any consequence and suffer the indignity of being forced to perform labor to be able to use a toilet.

Now if you mean the lowest overall classes, I've been to rural areas in China where the entire community shits in a hole dug in the ground, it gets filled, a new one is dug. They also all share a single water source. We're talking a few hundred people here. On the opposite end of the spectrum I've met someone in Shenzen who owns two houses in London, one in Toronto, and one in Hawaii. Each house is nicely furnished and has a few luxury sports cars to choose from.