I'd say a bit of both really. I know that for me, anger was one of the only emotion, I was rather in touch with...and allowed. I drank through the majority of my emotions. Alcohol lowers are inhibitions (so if anger is already there, guess what's coming to life) and seems to stimulate aggression. The only way to really figure any of this out is with your wits about you. We have to face ourselves in sobriety and get ourselves the tools in order to do so? How are you facing your sobriety? What support systems or mechanisms do you have in play?