Rapper Mos Def, who now goes by Yasiin Bey, is protesting the U.S. government's policy of force-feeding Guantanamo Bay prisoners on hunger strikes.
To make his point, he volunteered to be filmed undergoing the standard medical procedure currently being used on 44 detainees who refuse to eat.
The four-and-a-half-minute clip was shot for the UK's The Guardian by the human rights charity Reprieve and BAFTA winner Asif Kapadia.
Mos Def starts out dressed in a dapper black slacks, a collared black shirt, a leather jacket, leather shoes with white laces, and a knit black hat.
He says, "Peace. My name is Yasiin Bey, and I'm here to demonstrate the standard operating procedure for force-feeding detainees at Guantanamo Bay."
The next moment, he's wearing an orange jumpsuit and guards are handcuffing his wrists and ankles, placing him in the chair and strapping him down.
Then, they place a belt across his forehead to prevent him from moving his head and a doctor inserts one end of a tube to a feeding syringe and starts to push the other end into his right nostril.
Mos Def squirms, groans, coughs, and gasps in pain.
Doctors hold him down and turn his head to the side.
They push the tube past his nostrils and into his throat. Guards hold his chest down and try to force the tube past his throat and down his esophagus.
When that doesn't work, they remove the tube to try again.
As the doctors are about to restart the procedure, Bey says, "Please, please, please, please, don't!" At first, the doctors don't listen and he pleads again.
"Nooooo, stop! I said stop it! This is me. Stop it. I can’t do it!"
The doctors end their efforts and Bey leans over and sobs.
Then a caption flashes across the screen: "In Guantanamo Bay the full procedure is carried out twice a day. Typically, it takes two hours to complete."