If you want to be reminded of just how radically left the adults of that time were and the media, then go check out the DVDs of the 1960s, “Smothers Brothers Show”.
It was prime time TV of radical politics, and direct to the camera lectures, that were softened with jokes and occasional music.
I just watched some of them again, and trust me, your memory does not do it justice, it was hardcore leftism delivered by corporate establishment and millionaire business people.