Dean Obeidallah, CNN
A reporter from a right-wing media outlet heckled President Obama -- not once, but twice -- on Friday as he was unveiling a new immigration policy. If this shocks you, you haven't been paying attention. This is simply the latest page from the right's playbook to delegitimize Barack Obama's presidency.Some may dismiss it as an isolated incident, but it's not. It goes much deeper. Believe me, I know hecklers -- I'm a stand-up comedian. If someone heckles me once, it can be a mistake: too many drinks, overcome by emotion, etc. But when you heckle twice, you have an...