I totally get this. Don't really give a crap what Don said, he's nobody. But your dad went off the deep end and treated you like shit. You have every right to be mad. But sad, I understand. It's disappointing to see them come off the pedastal you may have them on. It's DAD, right?
Let it die down some. Cooler heads will prevail, I really hope. For both your sakes.