[Enna listens to this, and doesn't bat an eye.]

You're a jerk and you're dumb.

[Nailed it, Enna. She folds her arms, staring back at him levelly.]

Gonna ignore all your dumb assumptions. I know what battles are like. People who die here come back on the train- You're proof of that. So how do you know they won't come back somewhere else and be fine?

Pinned down means they can't fight. If they can't fight, killing them is just murder.