If we are to give the Beatles credit for toppling the iron curtain (maybe partially justified), then they have to take blame for being rotten influences to the young people of the 60s and leading many to destruction (definately justified). The Beatles lead many to experiment with drugs by their bad example.
I love the Beatles music but as role models they were terrible. It used to make me cringe when I saw Ringo Starr on a childrens program knowing his past.