Good and Evil are values that are imposed upon these texts by modern readers. The only thing that Krishna accused of Arjun was being "non-aryan," अनार्य, and "unmanly," क्लैब्य. The Rakshasas were also "non-aryan" because they had strange sexual practices, lived in the jungle, and worshipped Shiva. And in the northern India tellings of the Ramayana, at least in the Valmiki Ramayana, which I assume you are familiar with based on your spelling, it is Rama who incites the initial violence, not the Rakshasas.