No. 15-3047 11 a majority is not all, and not all advertisements for sex are advertisements for illegal sex. There is no estimate of how many ads in Backpage’s adult section promote illegal activity; we just gave examples of some that do not. As a citizen or father, or in any other private capacity, Sheriff Dart can denounce Backpage to his heart’s content. He is in good company; many people are disturbed or revolted by the kind of sex ads found on Backpage’s website. And even in his official capacity the sheriff can express his distaste for Backpage and its look-alikes; that is, he can exercise what is called “[freedom of] government speech.” See Walker v. Texas Division, Sons of Confederate Veterans, Inc., 135 S. Ct. 2239 (2015); Pleasant Grove City v. Summum, 555 U.S. 460 (2009); Johanns v. Livestock Marketing Association, 544 U.S. 550 (2005); Rosenberger v. Rector & Visitors of the University of Virginia, 515 U.S. 819, 833–34 (1995); Freedom from Religion Foundation, Inc. v. Obama, 641 F.3d 803 (7th Cir. 2011). A government entity, including therefore the Cook County Sheriff’s Office, is entitled to say what it wants to say—but only within limits. It is not permitted to employ threats to squelch the free speech of private citizens. “[A] government’s ability to express itself is [not] without restriction. … [T]he Free Speech Clause itself may constrain the government’s speech.” Walker v. Texas Division, Sons of Confederate Veterans, Inc., supra, 135 S. Ct. at 2246; see also Rosenberger v. Rector & Visitors of the University of Virginia, supra, 515 U.S. at 833–34. In his public capacity as a sheriff of a major county (Cook County has a population of more than 5.2 million), Sheriff Dart is not permitted to issue and publicize dire threats against credit card companies that process payments made through Backpage’s website, including threats of prosecu-