"What Comes Around, Like, Goes Around, Dude"

Ancient clapped-out hippies in Haight-Ashbury revolt against invasion of young even more clapped-out hippies into Haight-Ashbury.

It’s funny, I used to think that this was one of the most implausible episodes of Star Trek because it was so wedded to the fads of the era it was filmed in. (If the show had been shot 10 years earlier, would the guest stars have been black turtleneck-wearing beatniks?). Now I’m starting to believe that there will be a class of reactionary young people in perpetuity who rebel against accepted contemporary societal norms by dressing exactly the same as one group of teenagers fawned over endlessly by the media 40 years ago.