Is it now that Americans won't be called most racist people on earth?

Hello, I am from italy. We are raised in the europe to think that americans are most racist on the earth. We are told these words by all: TV, journals, teachers and singing stars. Yes, I come to america to stay for school with american family, and I learn soon from seeing that such words are not of truth. And then I think---hmmmm, yes, I see more of the minority on TV here in the america than anywhere I have to been. My favorite TV show is George Lopez. He is funny. I cannot see in Italy any time at all that there would be a TV show with stars of, let us say, from africa or middle east, not even albania across from the sea. And there is here in america also the minority of wealth not seen in europe. And now, Obama is the leader of the world, and he is black american. What will happen to the people who spread us the lies? Why do you think they did it? Why were we so blind to these things? Is is that we want badly to see america so in ugliness that we are blind to real things?