Fish and chips is actually of Jewish origin so that's already a CA right there...
Honestly I think this is all a bit silly. The woman on Newsnight was fascinating - very articulate but very determined not to let go of her point which seemed a very small one.
She objected to Elvis Presley being known as the King of Rock and Roll as she argued that rock and roll is of black origin. Well. Sort of. Blues is definitely black. But folk is not and there's a strong strand of folk in rock and roll. And country. And all sorts of other stuff. It's a mish mash. Like a lot of the best art forms.
And although clearly many black artists are underrepresented, the major blues and soul artists are black and no one is taking that away from them. There are of course many white soul singers but if you had to name the top five exponents they'd probably all be black (mine would anyway - Sam Cook, Otis, Marvin Gaye, Gladys Knight, Aretha). So the idea that only oppressor cultures get credit for art forms is just not true - at least not in the music sphere which is the area she chose to focus on.
I get that it's infuriating when a more powerful culture takes your material and presents it in a way that you wouldn't (The Mel Gibson Robin Hood, Disney's Peter Pan) but it's not a slur. It's not racist. It's just people playing with ideas and imagery.
The racism is when only one culture's outputs are appreciated and the others are denigrated. But that's not what is happening when Beyonce does a Bollywood show.
I also think it's quite patronising to these cultures that are deemed 'weaker' and oppressed. I don't think people in Lagos or Mumbai spend much thought on this - they have a vibrant culture with some native bits and some borrowed bits that create a new mish mash - some of which we might borrow ourselves one day.