But deputies at the new Denver jail told him to stop. When Booker, who was being processed on a charge of possession of drug paraphernalia, didn't obey, he was held down, hit with electric shocks and then placed facedown in a holding cell, according to two inmates who watched it unfold.
Booker never got up. He was pronounced dead later that morning.
"I've never seen anything happen like that before in my life," said John Yedo, 54, who was being processed on a charge of destruction of property and said he witnessed the scene. "What I saw is not what you'd expect to see in America."
The two jail witnesses, who were both arrested in the early-morning hours of July 9 around the time Booker was being processed, were contacted and interviewed by The Denver Post separately. Both of them said they had not been questioned by police investigating the death of Booker, a homeless ordained minister who served the poor, but also a habitual criminal with a long string of arrests.
Capt. Frank Gale, spokesman for the jail, said he cannot comment on the ongoing investigation by the Denver Police Department and the Denver district attorney's office, and cannot confirm the inmates' accounts.