I was in VietNam in 1969, on campus (U of MD) in 70-71, and in the MD National Guard in the ‘70s. And I worked in D.C. in 71 -72. The protests continued, and continued to turn into riots. Indeed, as the War wound down, the radicals got more violent; more desperate as they lost popular support. Bill Ayers and that bunch didn't start talking about putting 25 million recalcitrant ‘capitalists’ in ‘reeducation camps’ until the late 70’s early 80s.
For a while in the first half of the 1970’s, we packed our gear for riot duty every Spring. It was an annual rite of Spring.