Academics knew back then, but still allowed the take-over of the academic institutions. Ask yourselves, why? https://www.jstor.org/stable/4153081 Once you know that, then it's time to ask when? It wasn't recent, and it didn't happen overnight, it sure didn't start in 2016. Think origins. Think Lenin, Stallin, Trotsky, and Marx. Yes, if none of them were born, none of this would've ever happened. When did the infiltration in America happen? It's always been here in America in one fashion or another. Just now, they're exposing themselves more and more. Pay attention.