Caught this on PBS just this evening - probably being shown now bcz of the 57th anniversary of the March on Washington (yesterday), which is one of the many memorable events he witnessed, and shared in his photography.
I was just a kid in the 60's - but so many memories (both good and bad) were refreshed for me, The only "spoiler" I'll give is that Judy Collins provides a lot of insight in her narration,
If you want to learn something new - or to "be taken back" - this one will do it for you. And, it will give you an appreciation for photography when it was about recording or history, both important and mundane... before it became easy, ubiquitous and often pointless - like showing us what you're about to eat.