Theodore Dalrymple started noticing that the cast of Shakespeare’s plays have been getting more colorful this century.

Shakespeare is, par excellence, the playwright of universal human nature; not only does he seem to be able to inhabit the minds of an astonishing array of characters, but by some alchemy allows us to do so also. This being the case, and human nature being constant, what should it matter what race the actors are? They are human beings, and that should be enough. To notice that they are anything else is to demonstrate that you are racist.