In my experience, a very significant proportion of self-reported "anti-fascists" and "anti-imperialists" turn out, upon closer scrutiny, to actually be anti-US-fascism and anti-US-imperialism. They ignore, downplay, deny and ridicule all allegations of fascism and imperialism when perpetrated by others, like China or Russia.

In a somewhat related vein, there are entirely too many "anti-colonialists" in what is now fashionably called The Global South who, when push comes to shove, reveal themselves to be actually kind of okay with colonialism as long as it's not perpetrated against them. When a colonialist war of aggression is perpetrated against these white folks called "Ukrainians", and perpetrated by Russia, a country they really rather like, then what's a little colonialism between friends? Heck, Russia shows up with a colonialist militia to prop up dictators and mine for diamonds and gold all over the Sahel and it's like, heck yeah, thank for your kicking out the French. Really interesting logic.

Considering antifa is one of the most fascist groups in existence, I doubt most people actually know what a fascist is.