Care to describe in just what manner this man was “perp?” He received a call from the front desk telling him they needed to exit the room, which they did and walked straight into having a weapon trained on them with a deranged asshole barking contradictory orders. So, go ahead, what did he perpetrate?
Simply a shorthand way of describing him that you are trying to use to distract from the main point that this was a justifiable shooting because you have nothing to counter the juries verdict with.