Cite as: 601 U. S. ____ (2024) 1 Opinion of the Court NOTICE: This opinion is subject to formal revision before publication in the United States Reports. Readers are requested to notify the Reporter of Decisions, Supreme Court of the United States, Washington, D. C. 20543, pio@supremecourt.gov, of any typographical or other formal errors. SUPREME COURT OF THE UNITED STATES _________________ No. 22–611 _________________ KEVIN LINDKE, PETITIONER v. JAMES R. FREED ON WRIT OF CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE SIXTH CIRCUIT [March 15, 2024] JUSTICE BARRETT delivered the opinion of the Court. Like millions of Americans, James Freed maintained a Facebook account on which he posted about a wide range of topics, including his family and his job. Like most of those Americans, Freed occasionally received unwelcome comments on his posts. In response, Freed took a step familiar to Facebook users: He deleted the comments and blocked those who made them. For most people with a Facebook account, that would have been the end of it. But Kevin Lindke, one of the unwelcome commenters, sued Freed for violating his right to free speech. Because the First Amendment binds only the government, this claim is a nonstarter if Freed posted as a private citizen. Freed, however, is not only a private citizen but also the city manager of Port Huron, Michigan—and while Freed insists that his Facebook account was strictly personal, Lindke argues that Freed acted in his official capacity when he silenced Lindke’s speech. When a government official posts about job-related topics on social media, it can be difficult to tell whether the speech is official or private. We hold that such speech is attributable to the State only if the official (1) possessed actual authority to speak on the State’s behalf, and (2) purported to