Anti-Wall Street protests are growing in number across the country and around the globe, but their political impact remains unclear and will likely depend upon their staying power. At a minimum, the protests have become a channel for public anger over rising economic inequality and Washington's ineffectiveness. "They are a pretty good thermometer for the level of discontent in the country," said John Green, director of the Ray C. Bliss Institute of Applied Politics at the University of Akron. "But the connection between Republicans and Wall Street and the banks will surely be an election issue next year." Romney used...