Guerrilla Girls The Guerrilla Girls are a group of anonymous artists who wear gorilla masks in public and use facts, humor and outrageous visuals to expose discrimination and corruption in art, film, politics, and pop culture. In 30 years, they have come up with over a hundred posters, street projects, actions, books, and billboards. They travel the world doing gigs and workshops, inspiring others to create their own effective activist campaigns. Erase Discrimination 2 x 1 inch eraser