Borough of Duryea v. Guarnieri, No. 09-1476; U.S. Supreme Court; opinion by Kennedy, J.; concurrence by Thomas, J.; partial dissent by Scalia, J.; decided June 20, 2011. On certiorari to the U.S. Court of Appeals for the Third Circuit.

After petitioner borough fired respondent Guarnieri as its police chief, he filed a union grievance that led to his reinstatement. When the borough council later issued directives instructing Guarnieri how to perform his duties, he filed a second grievance, and an arbitrator ordered that some of the directives be modified or withdrawn. Guarnieri then filed this suit under 42 U.S.C. § 1983, alleging that the directives were issued in retaliation for the filing of his first grievance, thereby violating his First Amendment “right … to petition the Government for a redress of grievances”; he later amended his complaint to allege that the council also violated the Petition Clause by denying his request for overtime pay in retaliation for his having filed the § 1983 suit. The District Court instructed the jury, inter alia, that the suit and the grievances were constitutionally protected activity, and the jury found for Guarnieri.