Black Flag is an American punk rock band formed in Hermosa Beach, California, in 1976. Known for their aggressive sound and socio-political lyrics, they are considered pioneers of hardcore punk, a subgenre of punk rock. Key band members, such as founder and primary songwriter Greg Ginn and lead vocalist Henry Rollins, distinguished themselves with their intense performances. Among their most influential works is the 1981 album "Damaged", which played a significant role in shaping the sound and ethos of the American hardcore punk scene.