Former Vice President Al Gore made some disgraceful statements about the Koch brothers Tuesday. Participating in a Google+ Conversation, Gore accused two of the nation's largest employers of being "purveyors of the dirtiest energy on earth" (video follows with transcript and commentary): Gore Calls the Koch Brothers 'Purveyors of the Dirtiest Energy on Earth' AL GORE: [Obama’s] got a big decision coming up on the XL Pipeline for these awful, filthy tar sands that, you know, Canada just said, "Don’t take it across British Columbia. We’re not going to put up with that. It’s just too dirty and too dangerous."...