We sympathize with those voters who feel locked out of a political system that seems closed-off, self interested and remote. We hear every week from readers who feel Republican presidential candidate Donald Trump is their best chance to demolish a crony system that isn’t even interested in their concerns, much less committed to addressing them. These are two, distinct issues to consider, even though in the heat of the moment they might seem of a piece. First, yes: Many of us are so removed from the workings of the federal government that we don’t even know where to begin to...