Dracowrath said:
So, it's saving his life by arresting him for riding a train? Good thing I don't live in sweden then.
I'm not fully clear on the connotations here, but they were basically hitching a ride on the outside of the train. I believe they were in between cars, but I could be wrong.
Essentially, in such a position, all it would take is a single slip and the kid would be dead and the train would be at a serious risk of derailment, putting dozens if not hundreds more at risk. The guard was acting to protect the train, the other passengers, and the kid himself.