Guerrilla Girls is an anonymous group of feminist artists on a longstanding mission to fight sexism and racism within the art world. The group was formed in New York City in 1985 and tackle systemic issues with guerrilla methods, using iconic posters, books, billboards, interviews and more. Their work is colorful, distinctive and humorous. To protect individual identities in interviews, they wear gorilla masks and use pseudonyms that refer to historical female artists such as Frida Kahlo and Käthe Kollwitz, as well as writers and activists like Gertrude Stein and Harriet Tubman.