I think you if you make a donation, you can get a wallet-sized card that identifies you as a member. It is honored in some restaurants and shops.
Gotta love the intra-web.
On a more serious note, he apparently took serious issue with the Nazis although he remained in Germany, and helped artists and others who fell into their clutches. His biography would probably be a fascinating read and a worthwhile addition to listening to his music. I'm sure I have some old sets transcribed to 33, i will have to dig them out. Enjoy.
One other fascinating footnote, apparently the Russians grabbed a lot of the tapes, I think these were the BPO from 1942-44, and they only discovered better quality masters among them in the late 1980's, from what I read. There is a book by Ardoin on his recordings, but I'm not sure if it captures these lost recordings, which apparently were rereleased and among those listed in the Society's selections, e.g. Testament.