Sovereign citizens: A narrative review with implications of violence towards law enforcement.

Extremist movements are growing in the United States. One concerning extremist group is that of sovereign citizens. Sovereign citizens have been labeled by the Federal Bureau of Investigation as a terrorist threat. Relative to other research about extremist groups, limited research exists about the sovereign citizen movement. The purpose of this article is to review all relevant literature concerning this movement, as it pertains to the threat posed to law enforcement, via descriptive research and to identify existing knowledge gaps. Most empirical work, about sovereign citizens, thus far has focused on legal matters, mental health, radicalization, and postdiction of targeted violence. The work presented here serves as a foundation for future research concerning this group.