or not the state is legitimate. While anarcho-capitalists advocate its abolition, minarchists support minimal states, often referred to as night-watchman states. Minarchists maintain that the state is necessary for the protection of individuals from aggression, breach of contract, fraud and theft. They believe the only legitimate governmental institutions are courts, military and police, although some expand this list to include the executive and legislative branches, fire departments and prisons. These minarchists justify the state on the grounds that it is the logical consequence of adhering to the non-aggression principle. Some minarchists argue that a state is inevitable, believing anarchy to be futile. Others argue that anarchy is immoral because it implies that the non-aggression principle is optional and not sufficient to enforce the non-aggression principle because the enforcement of laws under anarchy is open to competition. Another common justification is that private defense agencies and court firms would tend to represent the interests of those who pay them enough. Right-libertarians such as anarcho-capitalists argue that the state violates the non-aggression principle by its nature because governments use force against those who have not stolen or vandalized private property, assaulted anyone, or committed fraud. Others argue that monopolies tend to be corrupt and inefficient and that private defense and court agencies would have to have a good reputation to stay in business. Linda and Morris Tannehill argue that no coercive monopoly of force can arise on a truly free market and that a government's citizenry can desert them in favor of a competent protection and defense agency. Philosopher Moshe Kroy argues that the disagreement between anarcho-capitalists who adhere to Murray Rothbard's view of human consciousness and the nature of values and minarchists who adhere to Ayn Rand's view of human consciousness and the nature of values over whether or not the state is moral is not due to a disagreement over the correct interpretation of a mutually held ethical stance. He argues that the disagreement between these two groups is instead the result of their disagreement over the nature of human consciousness and that each group is making the correct interpretation of their differing premises. According to Kroy, these two groups are not making any errors with respect to deducing the correct interpretation of any ethical stance because they do not hold the same ethical stance. Taxation as theft The idea of taxation as theft is a viewpoint found in a