All three people involved here—Maverick, Red, and Dre—have or had children. Being fathers binds them together, and perhaps this will convince Maverick to not kill Red. Importantly, Maverick also shows that in this moment, he associates being his father’s son with killing Red. He knows that Pops was many things—a dealer, a father, and a killer. But in this moment, Maverick feels he has to focus on the fact that Pops has killed someone in order to justify his actions.