Math Boycotts Police
Cut ties with Tel Aviv University and Greenberg Institute until detained Palestinian bodies are freed to their families and loved ones for burial.
Free Imad Barghouthi. A petition.
Freedom for Tuna Altinel. A petition.
The Zapatistas and ConCIENCIAS for Humanity.
Background on some of the above: Scientific American article on the cases of Altinel, Barghouthi, and jailed Russian mathematician and activist Azat Miftakhov. Update: as of 3 November 2020, Barghouthi is set to be released.