The story does say they don't believe it to be a racially-motivated attack, however it would be interesting to see more recent statistics on the 'race' (dislike the word) or ethnicity of the victim. I do believe that the numbers would be somewhat even, and nor do I believe that any ethnic group are more pre-disposed to racial violence than the next.
I do believe, though, that the media are encouraged the disparage and give wider coverage of racist attacks from 'whites' as it were on to another race. Probably to expose that the problem of racially motivated attacks aren't completely gone and to encourage debate. Downside of this, I feel, is that some individuals or groups may find that there needs to be scores settled as a result. Clearly, scores do not need to be settled. Racism isn't a numbers game, nor is it an acceptable fact of modern multiculturalism.
I just hope when people see arguments put forward by the OP (it's not particularly an argument actually, more an assumption of wrongs) in which emotive or semi-emotive language is used to implicate a false situation of racial aggravation, that they consider the facts first.
Let's be honest, any racism from anyone is abhorrent at the best of times, no need to make it worse by reacting to unreliable claims and propagating it over the internet.