INEQUALITY fosters resentment, but so can redistribution. That’s especially true when tax revenues go toward people considered less than deserving (currently, that group seems to be public-sector unions). But so far, one group is considered perennially entitled: the elderly. Americans are concerned about the growing deficit. Many would like to see less spending instead of higher taxes. But despite the expected entitlement debt-bomb, cutting entitlements to the elderly is still off limits.