My DH was walking our son home from school last week when a kid in front emptied the contents of his pockets onto the pavement. He dumped sweet wrappers deliberately and walked away. DH shouted at him to come back and asked him to pick it up which the kid did. He said sorry and everyone carried on their way. He's about 10 years old and in the year below my son. Though no more about it until DH saw a message from kids Dad who found him on social media telling him that he's the father of the kid he abused in the street and he's coming to look for him. DH replied to tell him exactly what happened and he's sent another message to tell him that he's still going to "catch up" with him. It's really rattled me and I don't want this stuck in my head over Christmas! Kids Dad is military and likely to see DH at some point. AIBU to be rattled by this? Was he right to challenge the kid? What would you do about it - ignore or something else?