I've already given my ideas on how Amon might take away powers by being a waterbender, and now I think that my thoughts are validated with this new idea. I think Amon is actually Tarlok. He's a waterbender. Thus making my theory of him being a bloodbender even more likely. Him creating a task force against "Amon" just gives his alter ego more power with the masses and allows him to create an army with greater ease. Notice how he was resolute with trying to recruit Korra as well. He figured it would be his best rallying cry for the non-benders of the city and eventually the world. "The oppressive Avatar wishes to silence us with her powers!" The chi blockers with him could possibly be members of the task force he created as well. Loyal followers that work both in the light and the shadows create an even more effective army. Think about it.