The Daily Cow

first of all, that's an overgeneralization; we obviously don't care more about the rest of the world than us. the USA will always act only if it sees benefits for itself. which is why we fight with the UN all the time, and we don't care so much about humanitarian issues that are ostensibly outside economic benefits/etc.

the fact is that America still suffers from racism and discrimination, which is why a disproportionate amount of blacks in the US are poor (it's not because they're lazy, or less smart, it's because they have decades upon decades of oppression in their history and are obviously thus not on an even footing with the rest of us). if you read about biopower, you would learn that modern governments don't put people to death to punish the population; instead, they ignore them, and just let them die off that way so they don't have to spend that much energy to wipe them all out actively. which is what happened with katrina.

and iraq isn't really outside our country; we invaded them. but we might see a new opportunity for the US in iraq, while we've abandoned new orleans. and there might be a sentiment of heroic (white) americans "saving" more "primitive" people in the "barbaric" middle east by bringing western values upon them. so there.