While very few big gifts go to social change, there are a few billionaires willing to fund advocacy and change: https://philanthropy.com/article/Inside-3-Big-Bets-for/234264?cid=pt&utm_source=pt&utm_medium=en&elq=de7b5b58dd584c698c708ccc723968ce&elqCampaignId=1891&elqaid=6957&elqat=1&elqTrackId=9b3db656f9ce4c67b094089111a49592