Isn't it true that Republicans prefer blacks to stay home on election day?
1. Blacks tend heavily Democrat.
2. Republicans don't want Democrats to receive votes.
3. It is not plausible black voters will reverse their loyalty to the Republicans.
4. Therefore Republicans prefer blacks to stay home on election day, as opposed to going out and voting for Democrats.
Note that people are criticizing Obama for making a comment which provokes certain whites, rather than criticizing him for lying.