Thomas Baptiste Morello (born May 30, 1964) is an American guitarist best known for his tenure with the bands Rage Against the Machine, Audioslave, his acoustic solo act The Nightwatchman, and his newest group, Street Sweeper Social Club. Morello is also the co-founder (along with Serj Tankian) of the non-profit political activist organization Axis of Justice, which airs a monthly program on Pacifica Radio station KPFK (90.7 FM) in Los Angeles.