Is a democratic government better than a dictatorship government?

In democracy you choose a powerful man and make him sit silent or make him corrupt. The whole philosophy of democracy is that the majority decides what should be done. Sometime the majority can be completely wrong. (Remember the right/wrong definition is very contextual). The minority might be right. So now what does the minority do to correct the wrong? It either resorts to corruption or bullying. When the minority does that, the only institute to check this is the Government. So they either correct the wrong (and earn the wrath of majority) or stay silent (and be non-corrupt) or select the wrong (and earn a lot of black money). So in no way the Democratic government is like / better a Dictatorship government. In Dictatorship government, they decide the meaning of right and wrong and impresses the same on the citizens. Then they implement what is needed as per their thought.