To be correct, abortion on demand and no fault divorce were products of the G.I. and Silent Generations, as Roe v. Wade dates to 1973, when there were few, if any, Baby Boomers in the legislatures, Congress, or the courts. Divorce laws were liberalized on the state level in the 1960s and 1970s, when veterans of World War II dominated the legislatures.
The slide of America into moral degeneracy was well underway well before the Beatles landed at JFK Airport in New York, or Mario Savio led the "Free Speech Movement" at Berkeley.
How did the Beatles hasten moral degeneracy? By improving a moribund pop music scene?