Answer:
Reign of Terror
Step-by-step explanation:
In the aftermath of the French Revolution, there was a series of public executions that was a violent response to any person who was opposed to the revolutionary ideas. This is known as Reign of Terror . It was lead mostly by Maximilien Robespierre, one of the leading figures of the Revolution and it ended after he and his allies were arrested and killed.
The most notable was the execution on the guillotine of Queen Marie Antoinette, but there were around 170 000 people killed in total. Many were victims of the massacres (like prisoners killed in the September Massacre), and some were first allied with Robespierre and executed after trying to oppose him and his rulership.