OP asked for an opinion. I am no lawyer so IMO the shooter f'd up big time. The father wanted his kid. All parties did stupid actions. I didn't see justification of use of deadly force. Boyfriend escalated the killing, should have just went inside with girlfriend and called police. I imagine him and ex argued a lot, thus being an ex. Either way, sad when a father gets killed when he comes to pick up his kid when the court says he has the right to have the kid.
