My first response was to bring up the preference of some to be massaged into oblivion than be shocked into clarity. For some reason, 'You're a fucking racist idiot' is a more offensive statement than 'black people have less native intelligence than other races, and embrace poverty accordingly'. Even worse is the 'the major goddamn drain on the budget is the tax cuts, as the federal budget has shown every fucking year since 2002', which simply blows 'the tax cuts have increased revenue, because that's the power of fiscal conservatism' out of the water. A lie, an insult, a grossly racist imputation is afforded legitimacy because it's said nicely.
That's why. And it only gets better. Check out the comments, too, for some spectacular trolling.