How did New York Times Co. v. Sullivan broaden freedom of speech and freedom of the press?

In New York Times Co. v. Sullivan (1964), the U.S. Supreme Court fundamentally broadened freedom of speech and freedom of the press by constitutionalizing defamation law and establishing the "actual malice" standard.1

Prior to this ruling, state laws often allowed public officials to win libel suits even when minor factual errors occurred, which effectively silenced criticism of government conduct. The Supreme Court ruled that for a public official to succeed in a libel action, they must prove the statement was made with "actual malice"—defined as knowledge that the information was false or with reckless disregard for its truth.12

This decision expanded protections in several key ways:
* Encouraging Debate: The Court asserted that public debate should be "uninhibited, robust, and wide-open," ensuring that even unpleasant opinions are protected to allow for full discussion on important issues.1
* Limiting State Power: By requiring proof of actual malice, the Court prevented states from using technicalities or minor errors to punish the press for criticizing government officials.1
* Appellate Oversight: The Court granted appellate courts the power to review facts in libel cases to ensure that local juries did not improperly penalize critics of the government.1