What happened to the Sikh woman was appalling, and clearly it was racism. I may be wrong, although I don't doubt there are plenty of racial attacks against Muslims, that was the first time I'd heard of a Muslim woman (mistakenly in this case) being raped where the motive was racial and religious. That's not to say it hasn't happened, I just haven't read about it and I'm happy to be corrected.
On the other hand there have been hundreds, if not thousands of white girls, deemed "white trash and fair game" by their rapists, generally Muslim men, on industrial scale we're told. How many times do the same demographic appear with an almost predictable regularity when yet another such grooming trial is reported on.. That doesn't go the other way, which is why the appalling rape of the Sikh woman stood out in the way it did. That's not to say, as usually is pointed out, overall white rapists will outnumber their Muslim counter parts, but as white men represent 80% of total male population, to be expected.
All rapes are awful and as with the rape of the Sikh woman and the young white girls it demonstrates a contempt for women and a derision for their race and preconceptions and prejudices as to how men judge women on ethnic and religious grounds.
Lets also not forget those who drive around Jewish enclaves, shouting "rape Jewish women and girls" which unsurprisingly went unpunished.