Anti-establishment Populism
This term describes political movements that reject entrenched elites and institutions, framing society as a conflict between ordinary people and a corrupt ruling class rather than just expressing general anger.

Anti-establishment populism is a political ideology that frames society as a moral conflict between 'the pure people' and 'the corrupt elite,' advocating for the removal of established political institutions and leaders who are perceived as unrepresentative. It originates from grievances regarding economic marginalization and a belief that traditional power structures have failed the common citizen, promoting direct action or leaders who claim to be outsiders.
What this means in real life
When voters support a political outsider who promises to 'drain the swamp' and dismantle existing government agencies, viewing traditional politicians and bureaucrats as self-serving elites disconnected from ordinary citizens' needs.
What it isn’t
It is not simply criticism of government or disagreement with specific policies. Many people critique institutions without embracing populism's core claim that a unified 'people' must reclaim power from a monolithic, corrupt 'establishment.'
Commonly misused online
Social media often uses the term to mean any anti-government sentiment or distrust of institutions, when populism specifically requires framing issues as a moral battle between virtuous common people and corrupt elites.