Donald Trump says because of how 'poorly' Obama has done as president, US will never see a black president for generations

While expressing himself (Trump left) concerning the Ferguson mayhem, he started castigating Prez Obama. This guy is so mis-guided and shabby and so basket-mouthed and so shallow and so eeerrrrgghh. Please someone tell him that Prez Obama is History itself!

 See Trump's full tweets after the cut...