Moral Perception and Morally Relevant Perception

You might bear witness to some injustice, but can you witness the injustice itself? At first glance, it’s tempting to say “yes.” Sometimes we see things that provoke an immediate judgement that some act is wrong just as we sometimes see things that provoke the immediate judgement that e.g. the book is red or that our friend is angry. It seems like we perceive the injustice just as we perceive the redness or the anger. Natural as that position is, I argue that it is a mistake and that those who have adopted it often confuse the perception of moral properties with the perception of morally relevant properties.