You know, I was of similar opinion when reading the line, though it didn't register as sharply. It's a bold claim: to say that now, "black people lead the free world". I get the sentiment: the world in general has made a big step when Barack Obama was elected because it has shown a volume of acceptance previously unseen in one of the world's most... let's say, sharply-divided countries, opinions-wise. I'd agree without much hesitation had it said "a black man leads a free country" (even then... but hey) or "black people have the opportunity to lead the free world".
I'm not trying to be racist or to pick up a fight, but I'd like to clear something up.