What do you do with road rage?

My wife encountered a redneck from where we live who actually followed her home and screamed that he had taken her license down and reported her to the cops for "drunken driving" and weaving in and out. My wife doesn't even drink and just driving home from church. She was driving slower than he was and he was tailgating her and she slowed down for him to p. Then he came to our house and screamed profanity to her and called her names. She called up the troopers where we live and told them what happend. He said she was doing nothing wrong but the guy was an . Have you ever encountered that before? We live in Alaska and we have a lot of drunken jerks up here.