Chauvin trial: doctors testify that George Floyd suffocated

Dr. Martin Tobin and Dr. Bill Smock testified in the murder trial of former Minneapolis police officer Derek Chauvin, charged in George Floyd's death.

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A medical expert in the physiology of breathing testified in the murder trial of Derek Chauvin that the way George Floyd was restrained — handcuffed behind his back, face-down on the ground, with a knee on his neck — prevented him from breathing properly.

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