A police officer's duty to intervene when a colleague uses excessive force is at the core of the prosecution of three men charged as Derek Chauvin's accomplices in the murder of George Floyd.
Former Minneapolis police officers J. Alexander Kueng, Thomas Lane and Tou Thao are being tried in federal court in St. Paul on charges they violated Floyd's civil rights by failing to provide him with medical aid as Chauvin knelt on his neck for more than nine minutes and eventually killed him. Kueng and Thao are also charged with failing to intervene on Floyd's behalf.
Kueng and Lane were new members of the force at the time. Chauvin, a 19-year police veteran, was at one time Kueng's field training officer.
Floyd died after being detained by Chauvin and his fellow officer on the pavement at E. 38th Street and Chicago Avenue on May 25, 2020.
Chauvin was convicted in Hennepin County District Court last year and is serving a 22½-year state sentence for murder. He pleaded guilty to federal charges in December.
Kueng, Lane and Thao are scheduled to be tried in state court on charges of aiding and abetting murder.
Prosecutors argue that the Police Department's regulation requiring officers to intervene in cases of excessive force was part of their initial training. The say it is "a foundational principal of policing that permeates many aspects of training and practice," according to a pre-trial court filing.
Defense attorneys counter that training on intervention was minimal, limited to a reference in a presentation, with no scenario-based instruction that would give officers the necessary tools to prevent a superior's misbehavior.