The Legend of Korra 1x11 Full Reaction

Tarloc said "Amon truly believes that bending is the root of all Evil" that is why he's taking bending away from people.

They don't ever really explain it well or more other than "so he somehow uses bloodbending!" but the creators explained it a bit more. Think back to the chakras and the Guru in Atla. Basically Amon is blocking those certain chakra points that connects a person to their bending element. Pretty insane capability of bloodbending (Just an FYI)

Lol Lola was like wtfff it’s over