In a year when California Democrats are worried about motivating their voters, Gov. Jerry Brown heard another unwelcome message Saturday: Some Democratic activists are bristling over his administration’s policies on hydraulic fracturing, or fracking. Appearing at a state Democratic Party convention in Los Angeles, Brown found himself forced to speak over a noisy group of sign-waving protesters in his first major campaign speech since formally declaring his candidacy last month. “Just listen a moment,” Brown pleaded at one point, as the protesters bellowed “No fracking” and waved “Another Democrat Against Fracking” signs just steps from the podium where he was speaking. State Democratic conventions can be boisterous gatherings, […]