It is fair for a person or his family to rule a country.?

In the world we can see King, sultan, Landlord, or some madman like ghadafi, kim of north korea, who run their country with force, those day a strong who protect their village becomes headman is fair, but today badman becomes ruler suck all the country money and waste lot of human life, please send a god to destroy this badman and also the weapon seller from USA.