but see, I think that's the point. That it starts out with cases where it 'is' understandable and then once he gets away with that, how he keeps acting afterwards. Because these kind of things escalate.
If he were a bad cop right from the beginning, if he started out killing without thorough provocation, it'd be easier to condemn him right from the start.
the most interesting part of this to me, is how he's working for the police.