The Justice Department says it will ban federal law enforcement officers from using chokeholds during arrests and will bar no-knock entries while executing warrants except in rare cases. The change in policy came as former Minneapolis police officer Derek Chauvin, who was convicted of murdering George Floyd, is scheduled to be arraigned today in a separate federal civil rights case. An indictment by a federal grand jury found evidence that in 2017 Chauvin held a 14-year-old boy by the throat, hit him in the head with a flashlight and held his knee on the boy’s neck and upper back while he was prone, in handcuffs and not resisting. The encounter left the boy bleeding from his ears and needing two stitches.