Had Batman been a true murderer in the film,
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Archived from the IMDb Discussion Forums — Marvel/DC
chriso32394 — 9 years ago(November 17, 2016 05:33 PM)
he would have shot KGBeast straight in the head. But he didn't.
He shot the tank he was wearing to cripple his weapon so if we were to harm Martha, it would explode.
The safety of others has always been a top priority for Batman.