Each Circle of Magi is home to various fraternities of enchanters that serve as social outlets for mages and ways for those of like mind to promote their philosophies on magic. The most marginal of these were always the Libertarians, who believed mages must take a more active role in the politics of Thedas. While publicly only advocating greater power for the Circles, many Libertarians secretly wished to split completely from the Chantry, as mages did in Tevinter. The Chantry allowed the group to continue in order to note potential troublemakers.
The Resolutionists changed all that. Splitting from the main Libertarian fraternity, the Resolutionists are open apostates who support freedom for mages at all costs. They have engaged in acts of terror and sabotage against the Chantry throughout Thedas, and many are connected to Kirkwall's mage underground. They have declared that unless mages are freed to rule themselves, they will show every person in Thedas how little protection the Circle of Magi actually offers.