The Reign of Terror is also known as The Terror, it was a period of violence that occurred after the start of the French Revolution, incited by conflict between rival political parties, the Girondins and the Jacobins, and there were many mass executions.The death rate ranged in the tens of thousands, with 16,594 executed by guillotine and another 25,000 in summary executions across France.The guillotine (called the "National Razor") became the symbol of the revolutionary cause, strengthened by many executions such as King Louis XVI, Marie Antoinette, the Girondins, and many more. The Roman Catholic Church was against the Revolution, which had turned the clergy into employees of the state and required they take an oath of loyalty to the nation through the Civil Constitution of the Clergy.
The reign of terror goes against the declaration of the rights of man. The declaration of the rights of man says that the law should provide punishments only as are strictly and obviously necessary and it says no one should be disquieted on his opinions, including his religious views. In the reign of terror people were executed for opinions and executed for it which goes against what th declation of the right of man says.