If some hate interracial love than why do they support mixed people..?

Ok, so many people are against interracial dating you know if a black men is dating a white women. So why do they (judgmental ones) support Obama, Halle, and other "mixed" folks which came from the product of an interracial relationship. I have nothing against these people mentioned it's just an example. If it wasn't for it we wouldn't have a lot of the people as mentioned.Plus, that's kinda like being hypocrite when you hate interracial couples ; yet support mixed people. Regardless, if you see them as just "black:" they wouldn't been here without BOTH parents (interracial).