In 1972 for example, while the ‘60s and hippies, protests, the Vietnam war, the abortion battle, colleges exploding, riots, feminism, the Vietnam draft, etc were all in full flower, the under-30 vote went 52% for Richard Nixon and only 46% for the Democrats, the under 30 year olds were also the strongest supporters of the Vietnam war of all age groups.
I remember a time when Socialism and Communism were considered bad ideologies. We were willing to pay the price to stop them. Now, not so much. Human nature reverts back to the norm.