As soon as these two assailants start kicking the boy on the ground, would I be justified to use deadly force to stop them?

From public freakout: https://ift.tt/30zWy2i I think itis reasonable to think they have escalated the confrontation and are putting that kid's life in jeopardy, and deadly force would be a reasonable response. Especially considering the one is stomping on his head. via /r/CCW https://ift.tt/2IiIu7g