Sabotage the nation’s first black president and the Democratic Party might as well bid farewell to its most loyal base of supporters: African Americans…

Perhaps those on the purist Democratic left – not one of whom could have won a presidential race in 2008 and not one of whom can make it to the White House in 2012 – refuse to recognize what Obama has accomplished in two short years, even in the face of rock-solid Republican opposition. His supporters know better.

And make no mistake, those Obama supporters – not those faux Washington friends, but the rank and file around the country – will take note of his treatment by the left. And they will, if necessary, repay.

A promise, not a threat.