I think most racism IS a kind of laziness. It can get all worked up and industrious, sure, but basically it's roots are laziness. It's easier to get a cartoon impression of a person, of one sort or another, than to try to see and know them. I also agree with that Orc up there--one doesn't have to have any racist ideas to be a racist, all they have to do is cop out, do the easier thing, not go a little out of their way. People with good intentions predictably cop-out when making decisions involving race.
   Same with sexism. When it gets down to the short strokes race and gender bias acts a lot like bias about people who aren't especially attractive, which is a real bias too. When are we all going to suddenly have more time and energy and interest in getting up everyday and being more thoughtful, alert, and intent on being fair, in making friends, extending trust, in all ways, in everything we do. Sometimes we're too tired, too afraid, too busy. I think it's not very easy to do, and it doesn't get done by "just" doing or thinking any one particular thing, especially not patting oneself on the back for having ideals.