That’s easy. The press defines white hate groups. They rely on completely non-partisan sources such as the Southern Poverty Law Center, the Democrat National Committee, the Biden campaign, Black Lives Matter, etc., etc.
As you are no doubt aware, AntiFa is merely an ‘idea’ or ‘concept’ and not an actual group. Virtually all of the violence in places like Portland, Seattle, Chicago, St. Louis can be directly tied to white-supremest groups. Haven’t you noticed all the white people in the mobs?
/s
Does SPLC get taxpayer funding?