Keith Morris doesn't do fake smiles for anyone—especially not at his own show.

The Circle Jerks frontman confronted a concertgoer at Sunday's Las Vegas Brooklyn Bowl gig after being called a "traitor" by what appears to be a MAGA supporter. The exchange, captured and shared on social media, shows Morris responding with no filter.

"I'm a traitor? Fuck you," Morris said. "I vote in every election. I always vote for the least stinkiest piece of shit."

When the fan compared the Circle Jerks' political messaging to the Dead Kennedys, Morris responded with a barrage of rhetorical questions.

"Do you fucking understand our fucking lyrics? Do you understand what we're singing about? Do you fucking understand that I think fucking Donald Trump is the biggest piece of shit to ever walk the face of the Earth?" he demanded.

His final message was direct: "The next time we come to town, stay the fuck home. It's really simple."

The band then launched into "Coup d'État"—their contribution to the Repo Man soundtrack—which describes violent government overthrow.

This is consistent with Morris's long record. The Circle Jerks' 1982 album "Wild in the Streets" featured tracks like "Political Stu" and "Moral Majority" that criticized Reagan-era Republicans. Political anger has defined his work for four decades.

The video has circulated widely on social media, with viewers largely supporting Morris. At a Circle Jerks show, audiences know what to expect: punk rock with a political edge.