Why does George Greer wear that black robe to work?
Swine look really funny walking around on their hind legs, no matter how much you try to disguise them.
His colleagues are whistling past the graveyard, pretending that they can ignore justice the way he did without consequences.
That reminds me of an old saying. You can put pearls on a pig, and call her "Monique," but a pig is still just a pig.
I guess you could substitute a black robe, but you'd still just have a pig.