Punk rock got its name from the slang word punk meaning rotten and worthless. It was originally used to describe simple guitar based rock of bands like The Seeds, and later on Detroit bands like The Stooges and MC5. The anti-establishment ethic of punk hit a fevered pitch in 1976 through 1980, started partially as a backlash to the hippie movement of the late 60's. Many of these bands also intended to shock mainstream society, rejecting the "peace and love" image of the prior musical rebellion of the 1960s which had degenerated, punks thought, into mellow disco culture. The fashion Punk rock, gothic rock, industrial, hardcore punk, grunge, nu metal, thrash metal, gothic metal, new waveof the time included mohawks, body piercing with safety pins and conversion of unusual items into clothing and was very shocking to outsiders at the time. Punk rock embodied the ideals that anyone could start a punk rock band. Punk was stripped-down, three-chord music that could be played fairly easily. The lyrics introduced a new honesty of expression in matters both political and sexual freeing the artist to write in a more personal and honest way. Using cover songs as a ironic form of social commentary was a common theme among many artists. The emphasis in punk rock was placed on emotion and energy and not strictly musicianship. It's best known bands are the punk rock holy trinity of the Sex Pistols, The d?mned, and The Clash who many feel are the defining bands of the genre. The roots of punk rock were dark psychedelic and garage rock, glam rock, new wave music and the unusual and sporadic style of the immortal Velvet Underground, long thought to be the originators of punk rock. Later bands incorporated punk and ska elements which were largely unknown in the rock genre.