Liberalism Has Never Recovered From 1963

Very interesting Commentary essay explores the question

It is one of the ironies of the era that many young people who in 1963 reacted with profound grief to Kennedy’s death would, just a few years later, come to champion a version of the left-wing doctrines that had motivated his assassin, Lee Harvey Oswald. But why should this have been so? What was it about mid-century liberalism that allowed it to be knocked so badly off balance by a single blow?