I watched that video long ago in a channel that only played documentaries most of them geared against conventional thinking. One of the most popular was this. How to control population through desires vs fear. This is like in that era both ways of controlling the masses were experimented on the people (Germany being the totalitarian regime, and the US the consumerism regime).
Going further down the rabbithole you have Trump retoric has been a careful and calculated way of speak. The way he talks is certainly like an idiot, but there is a method to the madness, and one of the biggest disectors of that madness is the famous cartoon drawer Scott Adams.
The way Trump persuades the masses is done over several steps. He further explain here:
Interestingly is that he is also breaking down Kanye's latest outburst.
Ahh thanks, these look interesting to watch!