(adj.)
When you fight for a cause you don't understand, using facts you didn't check, defending values you don't actually believe in -- until someone disagrees, and suddenly they're racist, homophobic, or a nazi.
That libtarded policy of defunding the police while crime skyrockets is peak virtue-signalling gone wrong.
The state of being so far left-wing in ideology, it gives the impression person afflicted must be mentally handicapped - read: Retarded, to have such opinions.
She's so caught up in her ignorant, delusional ideology that facts and logic mean absolutely nothing to her. That moron is so pathetically leftarded.
A slightly more PC way to say that someone is incredibly stupid, lacking in intelligence and also intolerably annoying (Credit goes to Dan Savage of The StrangerSeattle's Only Newspaper).
sales rep 1: "Gawd this customer is so dumb, she doesn't know the difference between USB and parallel"
sales rep 2: "How leotarded"
Ben is such a fucking leotard, he got arrested for trying to break into his neighbors house when he was drunk because he thought he lived there.