Constitutional law includes rules that organize and limit what governments can do. It is often considered the most important type of law because it comes from agreements made after struggles for rights and governance. Even though people see these laws as fundamental, they mainly help support and enforce existing laws instead of defining what is right or just. When a government is changed, whether through revolution or force, many usual laws, like civil and criminal laws, remain in place, since people expect some continuity for the new government to be seen as legitimate. A constitution sets limits on government power and shows what a valid law should look like, but it is not a rule about right conduct itself. Many scholars have a hard time accepting that constitutional law does not have the same features as laws about right behavior, leading to ongoing debates about how to distinguish between constitutional law and other types of law.