“Handcuffs are supposed to hurt.” So says a Michigan police officer, when he arrests a driver during a roadside stop. Driver sues, claiming the cuffs crushed a nerve. Sixth Circuit: Our precedent put the officer on notice that handcuffing violates the Fourth Amendment if an arrestee complains the cuffs are too tight, the officer ignores the complaint, and the arrestee suffers injury. No qualified immunity here.