[throwaway91822]

> I don't see how Buddhism is an answer

The origination story of Buddhism starts with a guy with the highest status and wealth, in a society of extreme inequality, leaving his fortunes behind to help everybody (hint hint).

The first ashrams where so radically inclusive, letting people from all caste and gender live as equals, that they were chased out from many villages by armed crowds. (hint hint)

If that's not clear enough, Thich Nhat Hanh literally called his practices "engaged Buddhism".