The documentary amounts to a dramatic kaleidoscope of events surrounding the killing of four protesting students by the National Guard at Kent State University in May, 1970. The shooting was a turning point in student anti- Vietnam war demonstrations.
No single war (at least not until Iraq in 2003) was as divisive in American history as the war in Vietnam. It divided the nation in ways that it had not been divided since the Civil War and in a great many ways, that division has never quite fully healed.
It really doesn't matter if you consider yourself Liberal, Conservative, Moderate or don't give a crap. If you decide to see the PBS documentary "The Day the '60s Died" I submit that you maintain a balanced perspective throughout.