Defamation refers to any statement that negatively affects one's reputation. It is a tort defined by civil law, meaning one can be sued but not face criminal punishment. To prove defamation, a victim must show that a statement was made and published, was false, and caused injury. The landmark Supreme Court case New York Times v. Sullivan established that public officials must prove "actual malice" to recover damages from defamatory statements related to their job. For communications professionals, freedom of speech is important but defamation laws require avoiding statements that could harm others' reputations without consent.