Oddly enough hippie "culture" really trickled down to Middle America in the early 70s. This is when all the good old boys down south were growing their hair long and blasting Molly Hatchet.
On a final note, my father, who went into the Army in January 1967, remembers finishing his Army career at the Presidio in San Francisco in late 1969. By that time the "bubblegummers" had been pouring into the Haight, and my father had never seen so many young girls, within the boundaries of the USA, involved in prostitution, in this case to support their drug habit.
In other words, even from January 1967 to November 1969, the world had changed considerably.
So far, I’m enjoying this documentary. It doesn’t plug the Hippies so much as to just inform us as to what was going on. Notice that one of the commentators is the senior editor of National Review and another is with the Heritage Foundation.