John Wilkes Booth’s assassination of President Lincoln was actually one of three elements in the planned attack on April 14, 1865. Booth had learned that Lincoln was to attend the play Our American Cousin at Ford's Theater, and, being a well-known youngest member of a famous acting family, was very familiar with the interior of the building. He scouted out Ford's Theater hours before Lincoln's arrival, and planned his attack meticulously. Booth carved a peephole in the door to the Presidential Box and rigged up a way to jam it shut once he was inside.
In the early 3rd century AD, the Roman Empire teetered on the edge of an epic fall. On March 8, 217, the despised and ruthless Emperor Caracalla stopped to relieve himself against a roadside tree during a long overland ride, insisting on some privacy as he did so. In his moment of vulnerability, one of his guards, Julius Martialis, assassinated the Emperor with a single thrust of a dagger. Martialis did not survive his victim for long, as one of the Emperor's other bodyguards, a Scythian, immediately shot the assassin dead.