I saw a theory that spree killers were all the fault of the Sexual Revolution

I mean, there is likely a tiny grain of truth in there, but wrapped up in a giant ball of misogyny and Alpha Male posturing. It goes like this:
- Sexual Revolution happens (contraception, free love), leading to;
- Prolonged single years, postponement of / general decline on marriage;
- Tiger-blood havin' alphas drinkin' all the milkshake, women being SHAMEFUL SLUTS, beta males gettin' no milkshake
- Beta males with no prospect of mating going full psycho
So yeah, all the fault of those goddamn hippies and Kesha