Facebook like button years of questions from the public about whether it had an intention to incorporate a "Dislike" button, Facebook officially rolled out "Reactions" to users worldwide on February 24, 2016, letting users long-press on the like button for an option to use one of five pre-defined emotions, including "Love", "Haha", "Wow", "Sad", or "Angry". Reactions were also extended to comments in May 2017. The like button is one of Facebook's social plug-ins, in which the button can be placed on third-party websites. Its use centers around a form of an advertising network, in which it gathers information about which users visit
Facebook like button the employees fought back in court, with the argument that a "like" should be protected by the First Amendment to the United States Constitution about free speech. In September 2013, a federal appeals court ruled that "likes" are a form of protected speech under the amendment, commenting that "On the most basic level, clicking on the 'like' button literally causes to be published the statement that the User 'likes' something, which is itself a substantive statement. In the context of a political campaign’s page, the meaning that the user approves of the candidacy whose page is being liked is unmistakable.