It’s another of many reasons to rage at the leftoid hijacking of the hippie “movement”. Prior to SDS, Ayers&Dohrn, and the rest of the KGB tools (witting and unwitting), some very sound views on police power and the utility thereof were being developed, and were being promulgated in the best way possible: using ridicule.
That all went by the boards, and the result is as we see. Of course, no matter what they say, the Left wants and needs powerful, intrusive police forces. Somebody’s going to have to machine-gun the “dissidents” and “deniers”, and they’re sure as Hell not gonna get their own precious delicate hands dirty. At one time, it might have been supposed that policemen were American citizens, too, and would refuse to go along with that sort of program. As can be seen daily, that assumption is no longer valid, if it ever was.