What I want to know is, how does rebuilding the world work when everyone remembers that shit you pulled? (I am not being sarcastic. I REALLY WANT TO KNOW.)

I want to know this toooo. I loved that no one let him forget it AT ALL. I haven't seen Korra so I have no idea of the world building that goes on but I really want to know how he brings peace to the world even if he is working with the Avatar.