Mama's gone be mama
That said, there's a reason why, historically, men are the ones who plan, conduct, and wage war. Women do not possess the emotional constraint and clear mindedness to see past the "blood and violence", most times.(save for those women who are military)
Moms just being Mom, she don't realize she's actually in the wrong.
That young man is on the front lines where his heart and beliefs sent him.
It's not a matter of "uh what does it accomplish" type of c00nback talk. But a matter of knowing that every man must stand for something, knowing that now is the time to make such a stand if the opportunity presents itself to you, and knowing that "peaceful" measures have long been exhausted.