Punk most certainly changed music.....but it's not the only genre that did. I'd say punk itself was influenced to a degree by 70's glamrock. In fact, Bowie, Iggy and Lou Reed are probably the grandfathers of punk.
 
 I didn't dress as a punk in the, the ships captain may have frowned on a pink mohawk, but I certainly enjoyed the music and followed it closely, and as a Brit who was into the music I can say that the Ramones were not a factor whatsoever......Richard Hell was a large factor, but the Ramones??? Naw. 
 
 The early meaning of punk was plain and simple, and non-political to the extreme, it was just a case of 'we don't care, we couldn't give a toss about anything or what anyone thinks about us because the nobody cares about us, live for this very moment...so FUCK OFF' It was indeed a social statement, which some may argue is a political statement in itself, and their point would be well taken, but I don't think that was the intentions of the early punks, they were 'vacant'...remember that word?
 
 
 va·cant    ( P )  
 adj. 
 Containing nothing; empty. 
 Without an incumbent or occupant; unfilled: a vacant position. 
 Not occupied or put to use: a vacant lot. 
 Law. Not claimed by an heir: a vacant estate. 
 
 Lacking intelligence or knowledge: a vacant mind. 
 Lacking expression; blank: a vacant stare. 
 Not filled with any activity: vacant hours. See Synonyms at empty. 
 
 vacant
 
 adj 1: void of thought or knowledge; "a vacant mind" 2: 
 
 
  When the Clash came on the scene is when punk started to make direct political statements.