The sheer amount of racism, idiocy, bigotry and xenophobia in this thread makes me want to go curl up in a ball somewhere.
Usually, I'd launh off into a rant, and quote half a dozen people, telling them that they're idiots, or that they're pathetic human beings, or whatever, but I'm on my phone, so I'll keep this short.
A popular conception about the woman in this video - look at the Youtube comments - is that she has the cojones to stand up and say what everyone has been thinking. To those people, I say get your head checked. This woman, this evil hag, is not in any way talking about immigration. She does not mention illegal immigrants, and she does not express discontent with the government. What this woman does is stereotype and generalize in the most utterly hateful way possible. She says that the 'blacks' are ruining the country. She tells them to go back to 'n- nig - niggafrica'. When confronted with a black woman who's been British all her life, she denies the woman's right to be a citizen - to her face. Look closely class, because what we have here is nit a hero. What we have is an utterly fucking worthless human being, a prick whose presence makes us all the poorer. Unfortunately, she is also symptomatic of the diseased culture of intolerance and bigotry still so depressingly prevalent in the modern day.
/edit
Shouldn't be illegal though. Kick her off the train, sure, or maybe give her a warning for disturbing the peace, but to actually take her to court? Damn.