338 (1971). On his claims against West Hartford, the West Hartford Police Department, and Captain Lori Coppinger, Collins failed to identify a municipal policy or custom that caused him injury, or plausibly allege an equal protection violation. See Monell v. Dep’t of Soc. Servns., 436 U.S. 658, 690, 98 S.Ct. 2018, 56 L.Ed.2d 611 (1978); Freedom Holdings, Inc. v. Spitzer, 357 F.3d 205, 234 (2d Cir.2004). Finally, on his defamation claims, Collins failed to allege an injury under the “stigma-plus” doctrine that would rise to the level of a due process violation. See Komlosi v. N.Y. State Office of Mental Retardation and Development 38 (2d Cir.1997) (discussing the history and application of absolute judicial immunity); cf. San Filippo v. U.S. Trust Co., 737 F.2d 246, 254-55 (2d Cir.1984)
holding that while witnesses enjoy absolute immunity for their actions in testifying they are not immune for extrajudicial actions such as an alleged conspiracy to present false testimony holding that the considerations underlying absolute prosecutorial immunity at common law dictate the same absolute immunity under  1983 holding that a prosecutor accused of knowingly presenting false testimony at trial is protected by absolute immunity holding that prosecutors have absolute immunity holding that while a witness and prosecutor were protected by absolute immunity for their participation in judicial proceedings they were not entitled to absolute immunity on a  1983 claim that they conspired to present false testimony