world politics

While doing some research, I have found that the greatest follies and failures are made by politicians and presidents that focus on some statistical group or another and also base their decisions on how it will affect their political clout and position versus what is right. Ironically, this is the same folly that is followed by any person that has power over the lives of others whether it be government, church, community, or any other local level group. With this theory, does this mean that there is no consensus between one extreme to the other? To that degree, if one is a leader, they will forever commit to the folly presented above and those that follow will never allow the person to make a choice on the basis of morality, ethics, and just plain and simple being right or wrong. This leads to the inevitable conclusion, how can those of us that see these issues, place persons in power that can rise above it and at the same time, how can we prevent the persons from going down the same dead end road?