A "sovereign citizen" is a person who believes that they are not subject to the laws and regulations of the government. They often claim that they can declare themselves independent from the legal system and operate under their own interpretation of the law. This belief can lead to various legal disputes and confrontations with law enforcement. Sovereign citizens may use unconventional legal arguments and documents, such as affidavits or notices, to assert their views. While their beliefs are not recognized by courts, some individuals within this movement engage in activities that can result in legal consequences, including tax evasion and other unlawful actions.