Bertrand Barère de Vieuzac was a French politician, freemason, journalist, and one of the most prominent members of the National Convention, representing the Plain during the French Revolution. The Plain was dominated by the radical Montagnards and Barère as one of their leaders supported the foundation of the Committee of Public Safety in April and of a sans-culottes army in September 1793. According to Francois Buzot, Barère was responsible for the Reign of Terror, like Robespierre and Louis de Saint-Just. In spring 1794 and after the Festival of the Supreme Being, he became an opponent of Maximilien Robespierre and joined the coup, leading to his downfall.

The National Convention was the constituent assembly of the Kingdom of France for one day and the French First Republic for its first three years during the French Revolution, following the two-year National Constituent Assembly and the one-year Legislative Assembly. Created after the great insurrection of 10 August 1792, it was the first French government organized as a republic, abandoning the monarchy altogether. The Convention sat as a single-chamber assembly from 20 September 1792 to 26 October 1795.