Grungy 20-somethings full of scorn for America’s financial system but unable to articulate a concrete vision for reform–that’s the image most associated with Occupy Wall Street, which launched a series of anti-Establishment demonstrations around the globe in 2011. But less than a year after the last protester was removed from New York City’s Zuccotti Park, the movement has re-emerged as a series of laser-focused advocacy groups that, loosely organized under the Occupy umbrella, are trying to effect change in a variety of sectors, financial and otherwise. Led in part by former Wall Streeters, these groups might still promote radical ideas …