ROCHESTER, N.Y. >> The son of an inmate who died after a prolonged beating by New York prison guards said in a federal lawsuit Wednesday that his father’s attackers “systematically and casually beat him to death” in a correctional system that tolerates violence.

Robert L. Brooks Sr., 43, died on Dec. 10, a day after the beating at Marcy Correctional Facility in upstate New York. Body camera video shows “several large white law enforcement officers torturing a bloodied Black man who is restrained, helpless, and struggling to maintain consciousness,” according to the lawsuit, which said the assault lasted about 10 minutes. Officers struck the handcuffed Brooks in the chest with a shoe and lifted him by the neck and dropped him while employees who were watching the beating appeared indifferent.

His son, Robert L. Brooks Jr., sued the group of more than a dozen guards implicated in the attack, as well as the head of the upstate facility at that time and the commissioner of the state Department of Corrections and Community Supervision.

“I want the name Robert L. Brooks to be known forever and not just for his last final moments,” Brooks Jr. said at a news conference. He described feeling helpless and devastated while watching the video but said the world needed to see the images.

“They have the power to spark the change we need,” he said.