Donald Trump on Saturday started his Georgia rally by mocking President Joe Biden’s lifelong stutter, spurring criticism on social media. Trump has previously imitated and exaggerated Biden’s documented childhood stutter, as part of his routine claiming that Biden is “incompetent.” In this case, the speech followed Biden’s State of the Union address. At the Get Out the Vote Rally in Rome, Georgia, the ex-president began by bringing up Biden’s speech. Want more breaking political news? Click for the latest headlines at Raw Story. ALSO READ: ‘What a piece of work’: Marjorie Greene’s ‘childish’ S…