I’m really offended that some people are claiming this to be ‘white people’ behaviour. I don’t usually get involved in this sort of discussion but I was actually genuinely upset by this.
As an animator I understand the concepts and basic rules that most industry level animation follows, one of those is exaggeration. Exaggeration of movement, exaggeration of reality, exaggeration of character, the list goes on. A lot of the actions Korra (and most of the other characters use) in this series are extremely exaggerated which creates a nice mixture of semi-realistic and cartoon movement. The gesture of Korra grabbing the Chief of polices face was perhaps to emphasis her aggression, that she is upset and doesn’t respect the police chief for his actions. This is not a cultural or racial gesture, but one of personal value and perhaps also one that considers her age. She is a stubborn, rebellious teenager with more power than she understands or knows what to do with. The animation on Korra reflects this aspect of her personality.
No matter how much you think grabbing someone’s face is rude and obnoxious, it doesn’t give you the right to assume it’s ‘white people’ behaviour. There are many cultures across the world that use touching other peoples faces and bodies as gestures of love, affection, greeting, aggression ect. Korra is also a fiction animated character, not a real person. Her actions and views can be mirrored in society but her world is not ours, she is not a normal Inuit teenager, she’s an avatar and she still has a lot to learn in her fictional universe.