You are more than welcome to dive in that deeply. I don’t research this specifically- I just pull out the headlines when I see them and find them amusing.
But considering that those demanding to be paid are an extreme minority even within the extreme minority of protests, I’d guess that no, they likely weren’t happening (at least in my era).
Then again, in my era, only the rich (generally white males but occasionally white females as well) went to college and college was virtually free. So, you know, apples to oranges.