For me it came from the material. It was so well written and brought the opportunity to work with great actors. And of course the opportunity to 'mince about' was an added element that I wanted to take advantage of!
I choose not to give energy to the emotions of revenge, hatred or the desire to subjugate.
To note an artist's limitations is but to define his talent. A reporter can write equally well about everything that is presented to his view, but a creative writer can do his best only with what lies within the range and character of his deepest sympathies.