Because communists and fascists are evil twin brothers
Maybe technically a small difference in economics and how the spoils get divided but basically both want anarchy, followed by “their” team of brutal mafia thugs to take control of the top. Antifa, BLM, KKK, Bolsheviks, Nazis Goths, Visigoths, what’s the difference? Just names for warring tribes wanting to get control of us all.
They are unkissing - sometimes kissing - first cousins.