I’m not sure if that’s the right gesture when you’re constantly agitating against socialists:
Yes, common knowledge dictates that only socialists raise their fists, ever, because they invented the gesture
The guy is a politician. Unfortunately, for obvious reasons, he cannot show the gesture of his own political camp. So he will have to make do with this symbolic loan. But it fits in quite well with his election campaign, especially as he strangely portrays his opponents as fascists.
I am pretty sure a raised fist predates government or even agriculture, but sure, let’s work with very limited understandings of what things can mean. Donald Trump is a horrible monster, but I don’t really see what good limiting what he does with his hands does for anyone.