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The Jacobins, a radical political group during the French Revolution, were responsible for the September Massacres. These massacres were a series of extrajudicial killings that took place in Paris in September 1792, targeting thousands of prisoners who were perceived as political enemies of the Revolution. Charlotte Corday, who assassinated Marat, a prominent Jacobin leader, attributed the bloodshed to Marat's influence and the Jacobins' radical policies.