Just seeing this thread. I grew up in the 60's/70's. Worse now. At least we don't have a half dozen far left groups bombing buildings randomly. But tallying up the damage from last summer's mostly peaceful protests, any given year of violence then is nowhere near the destruction across the country as now.
The biggest difference I see isn't in how radical they were then compared to now. It's that there are orders of magnitude more people taking part, are better organized, are way better funded, and all the major institutions are supportive. Education and entertainment were the only American institutions who supported back then. And then it was limited to the humanities educators in universities, and a smaller subset of Hollywood. Prosecutors did not refuse to prosecute the perpetrators.