The Telegraph is reporting that the popular reality-based Labour MP Tom Harris has been “forced to resign” after posting a Downfall spoof video that mocked Joan McAlpine MSP, the First Minster’s close friend and adviser. Harris was Labour’s latest Twitter Tsar, though he’s hardly the  most loyal supporter of the leadership, so Guido doesn’t imagine there are many tears being shed on the inside. The video wasn’t even very funny…