The long and short of it is that a lot of people got very cynical about what their Lords and Masters told them about communism. And by and large the toffs were the folk imparting the information, plus we'd had Orwell's great works urging us to view propaganda urging us to hate the enemy with circumspection.

A hell of a lot of my parents' generation are still like that. Not an entirely bad thing, given the monolithic nature of the Murdoch empire and the politicians whom he has in his pockets like so much loose change.