Pyotr Kropotkin, born on this day in 1842, was a Russian scientist, historian, and anarchist theorist, known for his writings on mutual aid and advocacy of anarcho-communism. "It is only those who do nothing who make no mistake."

Silvia Rivera Cusicanqui, born on this day in 1949, is a Bolivian feminist, sociologist, historian, and colonization theorist who works directly with indigenous movements in Bolivia, such as the coca growers movement.