Turner v. City of Champaign

Claim of excessive force causing plaintiff’s death, court concludes force was not excessive and subject died of cardiac arrhythmia, in course of discussion court acknowledges that officer may not have followed best practices, but concludes, “police training policies and best practices, while relevant, do not define what is reasonable under the Fourth Amendment … ‘The excessive-force inquiry is governed by constitutional principles, not police-department regulations … Put another way, a police officer’s compliance with the rules of his department is neither sufficient nor necessary to satisfy the Fourth Amendment’s reasonableness requirement.