That's a good question.
Logically, I would have to convict, because the father had broken the law. That doesn't mean I wouldn't sympathize with him.
My "favorite" case was the Louisiana case where a perv had abducted and molested a young boy. When authorities caught the perv they returned him by air and the media covered the return at the airport. The boy's father was at a pay phone in the corridor pretending to be on the phone. When the cops and the perv passed, the father turned and sent the perv to hell with a well-placed shot. The whole thing was even caught on video by the media. Verdict: Not Guilty.