Are you sure he is angry, or just comes off as angry?(not that that is alot better)?
I ask only because My mother has discussed with me how people tend to think she is angry, simply by how she has aged lines into her face combined with her squinting from poor eye site. She told me my sister(when they lived together in Cali) would constantly ask her why she was angry, when she hardly ever was and after discussing it, it was realized my sister THOUGHT she was angry, simply due to the facial expressions my mother has little control of anymore, when she was rarely actually angry.
I know I can portray myself to look like I'm angry or pissed here when i'm actually not.
Maybe its just a game to get the oppostion more riled up?