Delegitimisation
（重定向自Delegitimate）
Delegitimisation (also spelled delegitimation) is literally the withdrawal of legitimacy, usually from some institution such as a state, cultural practice, etc. which may have acquired it explicitly or implicitly, by statute or accepted practice.
A sociopsychological process which undermines or marginalises an entity by presenting facts and/or value judgments which are construed to withdraw legitimacy is generally observed.