Write to Political Prisoners
Black Bridge International is an anarchist network of groups and individuals who are willing to print out letters and mail them to imprisoned comrades in their country.
Follow this link to send your letter:
http://www.blackbridgeinternational.org/
Or mail a letter yourself using New York City Anarchist Black Cross’s illustrated guide:
https://nycabc.files.wordpress.com/2017/04/nycabc_polprisonerlisting_12-3april2017.pdf