Is shutting down Chief Keef’s hologram concert a violation of the First Amendment?

“A performance by the Chicago rapper Chief Keef — or rather, his likeness, beamed live via hologram from California — was shut down by the police on Saturday night in Hammond, Ind., after warnings from the mayor’s office that the performer could not appear, even digitally, promoters said on Sunday,” writes Joe Coscarelli for the New York Times.

Chief Keef, 19, had billed the performance as a “Stop the Killing” benefit concert, meant to raise money for Marvin Carr, a fellow Chicago rapper who died in a shooting this month, and Dillan Harris, a 13-month-old child killed by a vehicle fleeing the scene of that shooting. The rapper opted not to appear in the Midwest in the flesh, citing outstanding warrants for his arrest, stemming from two child support cases.

Today’s Question: Is shutting down Chief Keef’s hologram concert a violation of the First Amendment?