Foxhound said:
Punk was a musical movement of the seventies that set out to carve out its own market niche through annoying/offending those who had embraced the flower power movement (mostly punk rockers' elder siblings) by eschewing the artsy fartsy excesses that had crept into rock and reembracing the high energy two and a half minute single. Notice I said market niche. Punk bands didn't eschew commercial success. They hoped to carve out their own market sector.
Wrong that is what your definition is.
Punk rock is a rock music genre that developed between 1974 and 1976 in the United States, the United Kingdom and Australia. Rooted in garage rock and other forms of what is now known as protopunk music, punk rock bands eschewed the perceived excesses of mainstream 1970s rock. They created fast, hard-edged music, typically with short songs, stripped-down instrumentation, and often political, anti-establishment lyrics. Punk embraces a DIY (do it yourself) ethic, with many bands self-producing their recordings and distributing them through informal channels.
By late 1976, bands such as the Ramones, in New York City, and the Sex Pistols and The Clash, in London, were recognized as the vanguard of a new musical movement. The following year saw punk rock spreading around the world. Punk quickly, though briefly, became a major cultural phenomenon in the United Kingdom. For the most part, punk took root in local scenes that tended to reject association with the mainstream. An associated punk subculture emerged, expressing youthful rebellion and characterized by distinctive styles of clothing and adornment and a variety of anti-authoritarian ideologies.
By the beginning of the 1980s, faster, more aggressive styles such as hardcore and Oi! had become the predominant mode of punk rock. Musicians identifying with or inspired by punk also pursued a broad range of other variations, giving rise to post-punk and the alternative rock movement. - Wikipedia.