Billy Joel wears yellow Star of David during concert

Billy Joel told Rolling Stone last month that he tries "to stay out of politics," adding, "I try not to get up on a soapbox and tell people how to think."

But at the singer's show Monday night at New York City's Madison Square Garden, Joel made a powerful political statement without saying a word.

During his encore, he appeared on stage wearing yellow Stars of David on the front and back of his blazer, like the yellow stars that Jewish people were forced to wear by Nazis during the Holocaust. In the wake of the recent events in Charlottesville, Joel appeared to be making a silent protest against the newly visible movement of white nationalists.

When asked for comment, a representative for Joel told ABC News that the singer quoted author Edmund Burke: "The only thing necessary for the triumph of evil is for good men to do nothing."

Joel's daughter, Alexa Ray, and his ex-wife, Christie Brinkley, attended the concert, and showed their support via Instagram.

"Now, THIS Is How You Do It! THAT’S MY POP!!! Proud Jewish New Yorker Through & Through!!!!! REPRESENT! STAND STRONG," Alexa Ray Joel wrote.

Added Brinkley: "And on the day of the Solar Eclipse a yellow star appeared on the jacket of another kind of star with a clinched [sic] fist that seemed to be gripping painful ... memories of loved ones who wore that star to their death."

"Thank you Billy for reminding people what was ... so it may never ever be again," she added.

During the show, Joel also invited Patty Smyth of the band Scandal to sing the group's hit "Goodbye to You" as photos of now-departed White House officials including Steve Bannon and Sean Spicer appeared onscreen.