One of the many slogans to come out of the culture war in the 1960s, ‘the personal is political’ best defines our own. The past six years of British and American politics have essentially been a fight about how valid and/or noble that sentiment is – how central a place personal feeling and identity should have in the way policy is made, and the way progress is defined. To understand the disagreements about race, sex and gender that divide the West now, we could do worse than go back to where the sentiment began – with second-wave feminists at the end of the 1960s, and with a set of serious ideas that have been cheapened and weaponized at both ends of the political spectrum today.