The immigrant community, particularly Hispanics, has rarely if ever been so mobilized in such a monolithic bloc - as Monday's marches, rallies, and boycotts made clear. So where does the movement go from here? Sign after sign carried through Chicago streets on Monday during a massive immigrant-rights rally said: "Today we march, tomorrow we vote." Whether the slogan comes true will depend on how well the coalitions behind the widespread May 1 events can transform street power into political clout. For now, most immigrant organizers are basking in the turnout for the marches: 400,000 people both in Chicago and Los...