This is really one very fine documentary. It presents lots of Louisianans who lived through his period of power and who give a wide range of views of him, from those who thought he was God's gift to the people to those who prayed for his early demise.
In the process it gives a great summary of how a modern dictator can engineer his rise to power. The film puts him in the context of Hitler and especially Mussolini. I wish it could have shown how Lindbergh would try something similar just a few years later.
Great use is made of contemporary newsreels and photos. Sometimes, when he is on a podium, Long looked like a caricature of himself. But evidently this did not bother his loyal followers, of whom there were many.
My only small objection: there are too many interviewees for at least me to keep track of, yet most were not identified again after their first appearance. I wish their name had been used every time they reappeared.
But that's a slight point. This is very well done, and I strongly recommend it for anyone interested in American history in the 1920s and 30s.