Because their opposition committed multiple crimes.
According to new legal theories that have never been used before and have been singularly applied to Donald Trump
Fascism is right wing
The DNC has been successful in making fascism much more diverse.
I think they are referring to the anti-liberal authoritarian left wing that has gained a foothold not only in the DNC but into the mainstream culture in certain ways. But "left-wing fascism" is a thing, or at least and idea, that has been around for awhile. Some call it "red fascism" and is in reference to left wing ideologies that are far from the center. It sort of invokes "horseshoe theory" that says left and right get pretty similar the further they get from the center.
SO the democrats are far-right and the republicans are center-right in your book then?