The video — which a federal judge called "horrible to watch" — shows defendant Shaun P. Porter appearing compliant as the cellblock attendant books him into the city's holding facility May 19, 2016.

When Porter says something Jaskula doesn't like, the attendant grabs the handcuffed defendant and throws him to the floor. His head hits a shelf. Porter, 37 at the time, goes limp. Jaskula drags him by the arms to a cell, where Porter's head slams into the door frame.

All the while, Porter does not resist.

Officers Craig and D'Agostino, who have just arrested Porter after a domestic incident, do not intervene.

Jaskula, along with two other cellblock attendants, partially undresses Porter, places a spit guard over his mouth and puts him into a restraint chair. Blood drips from Porter's face to the floor.

Porter is black. One of the police officers appears to be biracial. Jaskula and the other officer are white.

When arguing before Bannister in 2017, the mayor's lawyers focused on a state law that keeps secret the records used to evaluate the performance of most uniformed government employees, including police and corrections officers. City Hall lawyers argued the video was such a record.