Vice signaling
By 
Many of the comments to this Alyssa Milano tweet, embedding a speech that Greta Thunberg gave today, reflect a series of irritable mental gestures that could be dubbed “vice signaling.”
Vice signaling consists of communications intended to convey that their authors are too worldly-wise, too cynical, and too successful to pay any attention to the pleas of “social justice warriors” (a phrase that they consider devastating, since they don’t believe in social justice, and think anyone who does is a fool).
The purest form of vice signaling is to support Donald Trump, since really the only reason to support Trump if you’re not a one percenter is to own the libs, which means making fun of the SJWs 24/7, even if it destroys the planet in the process.
Do watch Thunberg’s speech.