Comment by Tosh108

There's a difference between discontent or frustration and hate & aversion. In buddhist view: hate and aversion will create enormously negative mindstates that will cause suffering to the person acting on this emotion. But the vajrayana schools (mainly tibet) also claim that there is clarity and energy in this emotion, and if it can be detached from ego it can be transformed to a positive "wisdom". I think this view encaptures the sentiment of both people here, anger can be positive, but also very negative.