The immediate background to the introduction of the Prairial Law was the attempted assassinations of Jean-Marie Collot d'Herbois on 23 May and of Maximilien Robespierre on 25 May.
[2] The law was an extension of the centralisation and organisation of the Terror, following the decrees of 16 April and 8 May which had suspended the revolutionary court in the provinces and brought all political cases for trial in the capital.
Precedents had been created at Lyon, Marseille and elsewhere.... at Orange in particular, there had been set up, by decree of the Convention, a Commission of Five, which, by dispensing with the usual formalities of counsel and witness, had succeeded in condemning to death, within two months, 332 out of the 591 persons brought before it.
[4] The law was also prompted by the idea that members of the Convention who had supported Georges Danton were politically unreliable - a view shared by Robespierre, Couthon, Saint-Just and others.
[5] As the Terror accelerated and members felt more and more threatened, Tallien and others began to make plans for the overthrow of Robespierre.
The Law of 22 Prairial was repealed on 1 August 1794 and Antoine Quentin Fouquier-Tinville, who had presided over the Revolutionary Tribunal, was arrested and later guillotined.