http://www.austinchronicle.com/music/2009-07-17/810720/very interesting book that I agree with, anyone who knows anything about 1950's rock and roll more than just the usual "elvis" crap would agree with this.
They turned it from music that black people, white people, men and women were putting so much work into,
and turned it into pretty much white kids and later on hippies.
Im not going to say they were bad artists, but the Beatles ruined what rock and roll was supposed to become.
They certainly changed it. And alot of people today are starting to see for the worse.