When that guy who stole the drugs lies to Stansfield in Leon: The Professional (1994), they come back the other day and shoot his entire family, including his wife in the bathtub with headphones on.
Later on, when Mathilda goes to her old place, Stansfield comes in with other two agents explaining what happened and how he shot that guy, because 'he was reaching for the gun'.
OK, they might have believed that, but how did he explain why unarmed naked women with headphones laying in a bathtub were shot? The daughter and the boy too. And he got away with it?