A movement of groups or individuals who advocate a society devoid of government structure or ownership of individual property. Many embrace some of the radical philosophical components of anticapitalist, antiglobalization, communist, socialist, and other movements. Anarchist extremists advocate changing government and society through revolutionary violence.
So, by this definition the Foundesr of the United States would have been on the list. Although they probably DO see our Founders as extremists.
And, ironies of ironies, so would the current administration for its espousal of " of the radical philosophical components of anticapitalist, antiglobalization, communist, socialist, and other movements"
I bet they don't see it that way though.
The Founders were certainly extremists and certainly on the 18th century DHS list. The would have all been hung as traitors had the war turned out differently.