Rigo 23 (Ricardo Gouveia) is a visual artist and activist who works in diverse media, often in collaborative and public settings. He is a contributor to Zapantera Negra: An Artistic Encounter Between the Black Panthers and the Zapatistas. Born on the Portuguese Island of Madeira, Rigo 23 has been based in California since the mid 1980s. For three decades he has worked closely with individuals and communities dealing with the consequences of ongoing institutional and historical injustice. He is particularly known for work that highlights the politics and political prisoners of the Black Panthers, from the Angola Three to Mumia Abu-Jamal, and the American Indian Movement’s Leonard Peltier. He is one of the founding members of the Clarion Alley Mural Project and is an occasional professor at the San Francisco Art Institute.