Because the Liberal Media enforces double standards; one for Liberals and another for non-Liberals.
*Liberal democrats believe that in this country good and evil is divided along party lines.
*Progressives (aka liberals) actually believe all the caring people are in their party, while all the greedy, mean people are in the other.
*Those on the left also think that intelligence is meted out along party lines. They are the most brilliant people to ever inhabit this planet, and anyone who dares disagree with that is either a moron, or in the case of African-Americans, an Uncle Tom.
And don't you forget it!