I was in a similar situation that didn't go nearly as well.. Some white cunt chav was being racist towards this black bloke on the bus. I was waiting at the bus stop for my bus and could see it all kicking off through the side window. No one was doing shit and the black guy looked terrified.

I waited about 20 seconds.. The guy was punching the window next to the black guy and screaming in his face like he wanted a fight. Eventually I figured enough was enough and got on the bus and said something alone the lines of 'Come on mate, just chill out. He doesn't want any trouble.' at which point the chav cunt squared up to me and asked me what I was going to do about it.

It was pretty obvious at this point he was coked off his fucking nut.

Anyway, I didn't really think that far ahead and no one came to the rescue. So I just kind of turned around and walked off the bus with him calling me a pussy. Then he continued to bait the terrified black guy while everyone looked on doing nothing. It was a full fucking bus and there were people that were clearly better built than me on there..

So then the guy gets out of the bus and starts punching at the window where the black guy is sitting and saying stuff like 'Come on then you cunt. Come out and fight me.' at which point the bus driver closes the doors and drives off.

So now it's just me and the cokehead chav cunt standing at the bus stop...

Luckily my bus arrived 10 seconds later and he hadn't had a chance to notice me.

He then threw a bin at the side of the bus I got onto and two fucking hench bald guys who were standing outside the bar smoking tackled him lol. He turned into the biggest pussy ever.. Turned all polite and said he didn't want no trouble.

Wish they'd come out to smoke about 20 seconds earlier.. Would have been epic.

Anyway, the point of my story is that it might not work. Sometimes you try and break the bystander effect and end up just looking like a pussy.