The process known as "Judicial Review" allows courts to "rule on the constitutionality of laws passed by the legislative branch". Question: What do you think it means to "rule on the constitutionality of laws"

It prevails in the government, civil society, and market economy of every state with a functional constitution. The rule of law exists when a state's constitution functions as the supreme law of the land, when the statutes enacted and enforced by the government invariably conform to the constitution.

the french revolution was when many people were persecuted for disagreeing or making separate government