Audio recording of cops beating and treatening a guy:
Full story and the recording
Full text of the recording (PDF)

When Tennessee law enforcement officials showed up at the home of Lester Siler, who they suspected of drug use, they asked Lester's wife and son to leave. They didn't know that Lester's wife had turned on a tape recorder in the kitchen. When Lester exercised his constitutional right not to sign a consent to search his house, these officers spent the next two hours torturing him. They beat him with bats and guns, held loaded guns to his head, threatened to shoot him, dunked his head in the toilet, burned him with lighters, attached his testicles to a battery charger, threatened to cut off his fingers, and threatened to "go get" his wife and take his child away from him. Then they arrested him for "evading arrest". It wasn't until the wife's recording made it to the FBI that all hell broke loose.

Photos of the officers involved and story

One of the officers was sentenced to six years in prison

Two other officers were sentenced to 57 and 54 months

This is one of the most disturbing things I've ever listened to in my life. This Eugene guy is one brave motherfucker.