I remember the whole thing like it was yesterday. I was living in San Francisco and within that short period of time, not only did the People's Temple, Leo Ryan murder thing happen, but also the killings of S.F. Mayor George Moscone and gay Supervisor Harvey Milk. The city was in a state of shock.
(I never went into the actual People's Temple in San Francisco, but walked past it many times.) And, yes, Jim Jones was very politically well-connected. He was very charismatic and had his way both psychologically and sexually with both men and women among his followers.
I have not yet seen this documentary, but am looking forward to it. It is in my NetFlix queue. (I didn't realize it was on PBS last night.)