Thomas Morello (born May 30, 1964) is an American musician, singer-songwriter and activist. He is best known for his tenure with the band Rage Against the Machine and then with Audioslave. Morello is currently a touring musician with Bruce Springsteen and the E Street Band. He is also known for his acoustic solo act called The Nightwatchman, and his latest 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.