A "musical" movement that pretty much consisted of playing really bad music very very fast. People seeking individuality started saying that they enjoyed these bands as a way to seperate them from the crowd, when there was no possible way that anybody could enjoy the music. While some good bands have come out of the movement (namely The Clash, The Ramones, NOFX, The Presidents of the United States of America, and Green Day), the majority of it is loud pointless noise.
One of the worst elements of punk is the "hardcore" movement led by bands such as Black Flack and DOA, which was made of a bunch of skinheaded racist anti-semites who liked punching each other at shows. The modern "hardcore" movement is even worse.
of some real music: Dream Theater, Symphony X, BB King, Iron Maiden, Robben Ford, Aretha Franklin, Arch Enemy, Into Eternity, Alice Cooper, Rhapsody, Manowar, Muddy Waters, Poison, Bon Jovi, Dio, The Blue Oyster Cult... so on