I cant believe the crap I saw on the train tonight in Melbourne.
I got on the train at Flagstaff station at about 5:10 pm - rushhour.
Two goth looking teenage girls where sitting a few seats from the door drinking 7/11 slushies and legs stretched out, so no one could set opposite them. A few people got on and tried to sit there, but were abused in the most vicious manner. ('Ill slit your $##@ throat if you sit there you &*^&')
At the next station, one guy in his late 50's wasn't having any of that, and sat down anyway. One of the 'girls' then went completely nuts. She took her full load of drink and dumped it on his head, and then jumped up yelling and abusing him. She then through a bottle at his head, causing a nasty gash!
The other girl, was just sitting there laughing. She also just poured the drink all over him as she jumped up.
Both then hurled abuse for the next minute or so, and then moved to the next carriage.
All i can say is

We alerted the driver, and someone who looked like an undercover police man did confront them when they got off at the next station, but they just walked off, after threatening him as well.
Im not sure what you are meant to do in a situation like that. My thoughts at the time was that really wanted someone to punch her in the face, but that would definitely not resolve anything. Animals like that cant be reasoned with either. The guy just told them to 'grow up'. No one, including me, wanted to confront them, that's for sure.