I think that judge people by appearance is normal. It's in our gene. Everybody do it. But it's important how you do it and how much you base on it. You can't "hate" for his face - it's not his fault, he born with it. Usually we're looking at sb's clothes, way of moving, talking etc. and then judge him. It's our attepmt at adapting, comparing with us. When we accept person or he look for us interesting then we try to get to know him better.