I think being attracted to certain races is the same as being attracted to certain hair colours, eye colours, or body types. Would being attracted to a certain religion also be prejudiced? I think people shouldn't care who someone is attracted to. If someone showed me a picture of someone and said, are they attractive, I'm going to look at physical features, including skin tone. Now, if you knew and liked someone but said you wouldn't date them SOLELY because of skin colour, that could be seen as racism.