virtue signaling

[ vur-choo sig-nl-ing ]
/ ˈvɜr tʃu ˌsɪg nl ɪŋ /

noun Sometimes Disparaging.

the sharing of one's point of view on a social or political issue, often on social media, in order to garner praise or acknowledgment of one’s righteousness from others who share that point of view, or to passively rebuke those who do not: The virtue signaling of solidarity with the victims can be a comforting affirmation of community.Their outraged virtue signaling comes across as contrived.

Origin of virtue signaling

Coined by James Bartholomew, British writer, in 2015
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019