The bust that began in 2007 has just begun to ravage tax revenues in communities from coast to coast. The problem is unlikely to subside soon. For instance, Baltimore collected $815 million in property taxes during the most recent fiscal year. Next year, the figure is predicted to shrink to $803.5 million. The following year, $773 million. The year after that, $735.7 million. The year after that, $729.4 million. “I don’t see any quick fixes over the next four or five years, to be honest.” Baltimore already faces a budget deficit of more than $50 million next year. “Obviously, it...