Anti-clericalism is a historical movement that opposes the clergy for reasons including their actual or alleged power and influence in all aspects of public and political life and their involvement in the everyday life of the citizen, their privileges, or their enforcement of orthodoxy. Not all anti-clericals are irreligious or anti-religious, some anti-clericals have been religious and have opposed clergy on the basis of institutional issues and/or disagreements in religious interpretation, such as during the Protestant Reformation.