Rage Against the Machine is an American rap metal band, formed in 1991 in Los Angeles, California. The band's line-up comprises vocalist Zack de la Rocha, guitarist Tom Morello, bassist Tim Commerford and drummer Brad Wilk. Critics have noted Rage Against the Machine for its "fiercely polemical music, which brewed sloganeering leftist rants against corporate America, cultural imperialism, and government oppression into a Molotov cocktail of hardcore punk, hip hop, alternative metal, and funk.