it is irrelevant to this thread whether or not people beat their children, the fundamental issue here is innocent until proved guilty, therefore the transport police should have dealt with the matter, it is not the right of some little prick who thinks he is a big man to interfere.
if the lad was guilty then he should be punished by the courts.
I made a point in another discussion that I was not surprised that some youths throwing rocks at cars ended up with a crossbow in their stomach, i did not say it was right to fire a crossbow, what i said was I was not surprised by the violent reaction to mindless violence. if someone came into my house and tried to attack me, i would defend myself,i would attempt to overpower the attacker with violence, it is not necessarily right in the eyes of the law, but it is a natural instinct.
however this lad did not attack the railway employee or physically assault him, therefore it was wrong for the passenger to throw him off the train.