I don't need to blog when there are writers like Thomas Sowell. While I have never read an article I didn't like, and wouldn't recommend, his last set, "Dismantling America" are worth special mention.
Part 1
Part 2
Part 3
I wouldn't be surprised if Part 4 comes out tomorrow, so keep checking his site. Even if there isn't a next part, whatever he will have written is sure to be brilliant.