Backwoodsman, I think that the police at the next station leading someone off a train gives a clear enough message and is the right thing to do.

The trouble with all this business of people taking the law into their own hands is that it can backfire and innocent 'bystanders' can be hurt. Where do you draw the line with these things?

I would be really cross and fed up if someone stole my car but the number of people who have been injured or killed trying to protect their car gives me a clear message that it is better to let the police deal with these things.

The lad without the ticket was harmless enough but he could easily have had a knife and then what would have happened if things had escalated?