The Justice Department has launched a civil rights investigation into the shooting death of 37-year-old Alton Sterling, an African-American resident of Baton Rouge, La.

Footage taken on a cell phone captured two white Baton Rouge officers pinning Sterling to the ground, with his hands behind his back, before shooting and killing him in front of a local convenience store early Tuesday. There were reports that Sterling might have had a gun, but officials refused to say definitively whether he was armed.

Protests spurred in the city after the video went viral on social media and celebrities ranging from Jesse Williams to Bernie Sanders have taken to Twitter to lend their voices to the cause.

The celebrity outcries ranged from “That’s Murder” to “Please provide a list of infractions punishable by spontaneous public execution.” “Insecure” star and creator Issa Rae created a scholarship fund in honor of Sterling.

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