> In 1920, a newspaper publication or a public speech needed to be really outrageously beyond the frames of the Overton window to end up in mass protests, boycotts, etc. It took a serious effort to coordinate the outrage, so it only happened when people felt really deeply about it.

Uhm, are you familiar with the material Henry Ford was publishing in 1920? Specifically to increase sales?

https://en.wikipedia.org/wiki/The_International_Jew

Perhaps this wasn't "beyond the frames of the Overton window" at the time, I don't know. But cancel culture ain't all bad!