A fight implies gunfire from both sides or retaliation. Neither is the case of the mass murderer. The only fight in the case of the white boys is the return of fire from the police or the hero gun owner. I would guess the white boys are lashing out at society for the way they have been treated.....you know, the outcast persona, which is indicative of mental illness.
See, I didn't answer your question with a question. Now answer mine. What are the murderous blacks of Chicago fighting over? You won't answer.