This window in the Cologne Cathedral depicts the stoning of Saint Stephen, the first martyr of Christianity, who was stoned to death for blasphemy.

This painting by the French artist Paul Delaroche depicts the execution of Lady Jane Grey, who ruled England for nine days in 1553. A dispute over succession led to the end of her rule and her eventual execution for treason the next year.

This illustration of an execution by elephant comes from the Akbarnama, the official chronicle of the reign of Akbar, the third Mughal emperor. The book and its 116 paintings by at least 49 different court artists took seven years to complete.

Scottish immigrant Alexander Gardner took numerous photographs of US President Abraham Lincoln. Here, he has captured the execution of the conspirators in Lincoln's assassination.

US President Barack Obama with his staff and cabinet secretaries in the Situation Room during Operation Neptune's Spear, which killed terrorist leader Osama bin Laden.