Risk played its part, too, in the massive postwar shift in social attitudes. People, often the young, were prepared to take huge, physical risks to right the wrongs of the pre-war world. The early civil rights and anti-war protestors faced tear gas or worse. In the 1960s, feminists faced social ridicule, media approbation and violent hostility. Now, mirroring the incremental changes seen in technology, social progress all too often finds itself down the blind alleyways of political correctness. Student bodies used to be hotbeds of dissent, even revolution; today’s hyper-conformist youth is more interested in the policing of language and stifling debate when it counters the prevailing wisdom. Forty years ago a burgeoning media allowed dissent to flower. Today’s very different social media seems, despite democratic appearances, to be enforcing a climate of timidity and encouraging groupthink.