Olivier award-winning actress Noma Dumezweni was cast as Hermione in the eagerly-anticipated two-part play, and now the "Harry Potter" author has reflected on the criticism that followed the announcement, reported Digital Spy.
"With my experience of social media, I thought that idiots were going to idiot," Rowling told The Observer.
"But what can you say? That's the way the world is. Noma was chosen because she was the best actress for the job."
"I had a bunch of racists telling me that because Hermione 'turned white' - that is, lost colour from her face after a shock - that she must be a white woman, which I have a great deal of difficulty with.
Back in December, the author posted "Rowling loves black Hermione" on Twitter.
Last week, a series of first-look images were posted of the actors in character for the play, including Draco Malfoy, Rose Granger-Weasley and Ginny & Albus Potter.
