I don't watch ice hockey much, but it's on at the weekends on Channel 5 here in the UK. Occasionally I'll watch a little bit. One thing I don't understand is the fighting. Can someone explain to me a few things. Firstly, why do the players fight? Secondly, why do the refs allow them to fight? Thirdly, why are they punished for fighting if the refs don't do anything to stop it?