376 U.S. 254 (1964) Cited 7,008 times 36 Legal Analyses
Holding that a public official or public figure can recover damages for defamation on a matter of public concern only if he proves that the speaker acted with actual malice
462 U.S. 393 (1983) Cited 652 times 11 Legal Analyses
Holding that the employer bears the burden of negating causation in a mixed-motive discrimination case, noting "[i]t is fair that [the employer] bear the risk that the influence of legal and illegal motives cannot be separated."