Tyrannicide is the killing or assassination of a tyrant or unjust ruler, usually for the common good, and usually by one of the tyrant's subjects.
The term also denotes those who kill a tyrant (e.g., Harmodius and Aristogeiton, who are called 'the tyrannicides').
Tyrannicide can also be a political theory, and as such dates from antiquity. Support for tyrannicide can be found in Plutarch's Lives, Cicero's De Officiis, and Seneca's Hercules Furens.Plato describes a violent tyrant as the opposite of a good and "true king" in the Statesman, and while Aristotle in the Politics sees it as opposed to all other beneficial forms of government, he also described tyrannicide mainly as an act by those wishing to gain personally from the tyrant's death, while those who act without hope of personal gain and only to make a name for themselves are rare.
Various Christian philosophers and theologians also wrote about tyrannicide. In Thomas Aquinas's commentary on the Sentences of Peter Lombard, Aquinas gave a defense not only of disobedience to an unjust authority, using as an example Christian martyrs in the Roman Empire, but also of "one who liberates his country by killing a tyrant." The Monarchomachs in particular developed a theory of tyrannicide, with Juan de Mariana describing their views in the 1598 work De rege et regis institutione, in which he wrote, "[B]oth the philosophers and theologians agree, that the prince who seizes the state with force and arms, and with no legal right, no public, civic approval, may be killed by anyone and deprived of his life..."
Tyrannicide was a 74-gun ship of the line of the French Navy.
In 1794, under Alain Joseph Dordelin, she took part in the Glorious First of June. Along with Indomptable, she helped rescue the Montagne trapped in the midst of the British fleet.
Under Zacharie Jacques Théodore Allemand, she was part of Bruix' squadron from March 1799 and took part in the Cruise of Bruix.
She was renamed Desaix in 1800 in honour of General Louis Desaix. Under captain Jean-Anne Christy de la Pallière, she captured HMS Speedy, captained by Lord Cochrane, and took part in the Battle of Algeciras Bay.
In January 1802, she was shipwrecked at Saint-Domingue trying to enter Cap Français harbour.