Do you want to specific? Which "policies" did he have that were horrible?
By the way the, the president of the U.S.A. is not a dictator, at least not yet (stay tuned). The Congress makes the laws. It's the President's job to carry them out through the executive branch of the national government.
So if you didn't like the "policies" of the Obama administration, what you mean is you didn't like the laws enacted by Congress. The only power the president has over legislation is the power to veto it. The President has no power to make laws.