Singer Kelis has opened up about the "disgusting racial problems" in the UK after falling victim to a verbal attack at a British airport this week. 

The 'Acapella' star told fans about her experience at an airport in London where she was victimised by a fellow passenger who publicly called her a "disgusting Nigerian" and a "slave".

She wrote about the horrendous incident in a series of angry Twitter posts and explained, "This fat red faced sweaty "man" (I use the word man loosely here) started calling me a slave and told me to call him sir and how I was probably a disgusting nigerian".

"All the while the entire line full of people I just sat on a plane with for almost 3 hours - over 50 people - said nothing. I mean literally nothing. Didn't flinch."

Kelis exclaimed that the UK is "racially decades behind progression" and added:

"But I am in london all the time and today I'm gonna say that the racial issues in the uk are disgusting. Its racially decades behind progression because everything is swept under the rug. People don't talk about it. People don't fight about it."

"I bring it up now because as an american it is abundantly clear that my country has a smorgas board (spelling?) Of disgusting racial problems. We are the poster child for racial inequality even still with a black president. But you can't fight for or against something no one is willing to talk about or even admit exist. Everyone wants to be politically correct. But who really cares?"

Watch part of her fantastic performance from 2011's Bestival here: