Roman dictator Julius Caesar was assassinated at the Roman Forum by a number of his own senators led by Marcus Brutus on March 15, 44 BC over concerns that he was becoming too powerful. The assassination wound up being a political failure as the Roman citizenry ended up becoming incensed at the conspirators and a civil war broke out, which Brutus and his supporters lost to Mark Antony and Octavian (later Augustus).
William Shakespeare later wrote in his eponymous play about the assassination, “Beware the ides of March.”
Learn more about the assassination of Julius Caesar.