Items missing from this article 

SPLC's list of anti-immigrant hate groups: http://www.splcenter.org/get-informed/intelligence-files/ideology/anti-immigrant

SPLC's list of Sovereign Citizen Movement hate groups: http://www.splcenter.org/get-informed/intelligence-files/ideology/sovereign-citizens-movement

SPLC's list of Patriot Movement hate groups: http://www.splcenter.org/get-informed/intelligence-files/ideology/patriot-movememnt

Why is that?