This. Dopamine isn't the "feel good" neurotransmitter, it's the motivation neurotransmitter, and it can definitely motivate you to anger.

I agree; I also think the portrayal of Mussolini was ridiculously comical and undermined any kind of serious critique of fascism. Similar problem to Jo-Jo Rabbit, in my view -- films that flirted with very serious themes but treated them in an irreverent way, leaving the audience with nothing deeper.