For other uses, see Liberatore. The assassination of Julius Caesar was the result of a conspiracy by many Roman senators. Led by Gaius Cassius Longinus and Marcus Junius Brutus, they stabbed Julius Caesar to death in a location adjacent to the Theatre of Pompey on the Ides of March (March 15), 44 BC. Caesar was the dictator of the Roman Republic at the time, having recently been declared dictator perpetuo by the Senate.