Noun
(historical) Someone who took part in, or otherwise supported, the civil unrest in France in May 1968, characterised by student protests and widespread strikes.
(loosely) A fierce social activist or protester.
Source: en.wiktionary.orgThere's a big difference, as I'm sure you know, it's a slightly manneristic one, between people of the '60s and people of '68. Being a soixante-huitard - it's so nice to have a French word for it - is very different from just having happened to been a baby boomer in the '60s. Christopher Hitchens