How does that make it any better? Anti-Vietnam and BLM are both protests that angered the Right and the trivialization of angers the Left. If you think you're going to "clarify" something, you're being Sean Spicer.

Also, there's the matter of how the Pepsi ad resembles a music video for The Chemical Brothers' Out of Control. 

Of course, if you want to get nostalgic about Flower Power, try thinking of Kent State:
https://en.wikipedia.org/wiki/Kent_State_shootings 
That was hardly a fun time.