I've recently touted establishing a Tor exit node at the inaugural Boise organizing committee of the Democratic Socialists of America.
The idea was considered esoteric, but such anonymity craft is useful for activists of all stripes.
Too, performing artists (neo-burlesque, LGBTQ comics, etc.), punks and anarchists have also expressed interest in Tor.
I have been told that Tor is conceptually difficult to wrap your head around, but these are useful mission fields.