Zacarías Manuel de la Rocha (born January 12, 1970 in Long Beach, California) is a rapper, musician, poet and activist, best known as the lead singer and lyricist of Rage Against the Machine. His latest release has been under the name One Day As A Lion. In 1983, de la Rocha's father Roberto (known as Beto)—a member of Los Four, the first Chicano art collective to be exhibited at a major museum (LACMA, 1974)—suffered a nervous breakdown and took his religious ideals to extremes.