Judging by the political reaction, you’d think that Paul Ryan’s budget takes a meat ax to Medicare and threatens economic havoc for the elderly. Just the opposite is true: The Ryan budget spares older people from almost any change or sacrifice — and that’s the problem. We have (and, to be fair, this is mainly the doing of Democrats and their intellectual apologists) made those 65 and over into a politically protected class, of which nothing is expected and everything is given.