Is it more surprising that some socialists spew racism or that other socialists imagine their ideology as synonymous with anti-racism? Your answer reflects your knowledge of history.
Socialist thugs violently clashed in Charlottesville this weekend. One group railed against bigotry. The other group embraced it. The anti-racist group departs more radically from their ideological forebears even if they manage to convince everyone that the nationalist-socialists they brawl with represent the real imposters.
The history of American socialism, until fairly recently, was a history of American racism.