On the evening of April 21 in Building 21 at the Fishkill Correctional Facility, Samuel Harrell ... got into a confrontation with corrections officers, was thrown to the floor and was handcuffed. As many as 20 officers repeatedly kicked and punched Mr. Harrell, who is black, with some of them shouting racial slurs, according to more than a dozen inmate witnesses. Mr. Harrell was then thrown or dragged down a staircase. Corrections officers called for an ambulance, but ... mentioned nothing about a physical encounter, [and] told the ambulance crew that Mr. Harrell probably had an overdose of K2, a synthetic marijuana. An autopsy report ... concluded that Mr. Harrell, 30, had cuts and bruises to the head and extremities and had no illicit drugs in his system. The manner of death: Homicide. No officers have been disciplined in connection with the death. Inmate witnesses at Fishkill say they are the ones who have been punished. Several described being put into solitary confinement and threatened with violence after speaking with Mr. Harrell's family, their lawyers and with news reporters. The Times documented similar allegations of abuse from inmates at the Clinton Correctional Facility in Dannemora, N.Y., where in June two convicted murderers escaped, resulting in a three-week manhunt. There, inmates described being beaten and choked with plastic bags by corrections officers seeking information about the escapees.