Virtue signalling
Virtue signalling is the conspicuous expression of moral values. The term was first used in signalling theory, to describe any behavior that could be used to signal virtue—especially piety among the religious. In recent years, the term has become more commonly used as a pejorative characterization by commentators to criticize what they regard as empty, or superficial support of certain political views, and also used within groups to criticize their own members for valuing outward appearance over substantive action.