It cannot be overstated how much cultural change occurred in the decades following World War II. Perhaps the most important changes had to do with the extension of liberal democratic ideas to their logical conclusion: everyone in a democracy was supposed to have equal rights, to be treated with essential dignity, and to possess the right to protest the conditions of their education, employment, or even their simple existence (in the case of women facing misogyny and harassment, for example). The legacy of the cultural revolution of that began with the youth movement of the 1960s remains strong to the present day.
Image Citations (Wikimedia Commons):
Beauvoir and Sartre - Public Domain
Warhol Campbell's Soup - Fair Use
Sgt. Pepper's - Fair Use
Workers May 1968 - Creative Commons, BeenAroundAWhile
Women's Liberation - Public Domain