Big Hollywood's S.T. Karnick:

The latest PBS adaptation  of Charles Dickens’s classic novel Oliver Twist demonstrates the urgent need for reform of the taxpayer-supported broadcasting service–or an end to taxpayer funding for it.

Among PBS's crimes, according to Karnick?  Casting a black woman as Nancy:

Clearly the producers are imposing an ideal of a colorblind society on a story where it adds nothing, is unnecessary, and is quite a distraction for those who know the original novel. The character, however, is as complex and benevolent as in the original story, which is all to the good.

Yes, clearly that was their intention.