Ethnopopulism collapses the plebs-populus distinction that general populism requires.

Evidence

The signifiers unifying the communitarian space are rigidly attached to precise signifieds. The condition of emptiness is, as we know, the indefinite expansion of an equivalential chain. This presupposes the internal division of the social field. But here this division has been cancelled: there is no plebs claiming to be a populus, because plebs and populus precisely overlap. — Ernesto Laclau, On Populist Reason, 385

Categorization

• XREF: connects to: Universalist populisms are possible when demands cut across ethnic identities. — Ernesto Laclau, On Populist Reason, 389; A people imposed homogenously from power is radical but never populist — Ernesto Laclau, On Populist Reason, 414; Populism assumes a homogeneous people betrayed by an elite cabal. — Russell Muirhead and Nancy L. Rosenblum, A Lot of People Are Saying: The New…, 152