LIPEZ, Circuit Judge. Simon Glik was arrested for using his cell phone's digital video camera to film several police officers arresting a young man on the Boston Common. The charges against Glik, which included violation of Massachusetts's wiretap statute and two other state-law offenses, were subsequently judged baseless and were dismissed. Glik then brought this suit under 42 U.S.C. § 1983, claiming that his arrest for filming the officers constituted a violation of his rights under the First and Fourth Amendments.
In this interlocutory appeal, the defendant police officers challenge an order of the district court denying them qualified immunity on Glik's constitutional claims. We conclude, based on the facts alleged, that Glik was exercising clearly- established First Amendment rights in filming the officers in a public space, and that his clearly-established Fourth Amendment rights were violated by his arrest without probable cause. We therefore affirm.