Ethiopia and Americans (Human Right)

I wonder why Americans help Ethiopia for killing innocent people in Ethiopia and Somalia. Ethiopia is the only country in Africa to colonize African people in the South East region of Ethiopia called Ogaden. Since 1995 right after killing Somali warlord Aideed, the new Ethiopia Government started killing its own people with the support of the United States. There is an evidence from MSF showing that Ethiopian Government banned MSF to help people live in the South East region of Ethiopia. These people are somalis, but the man made border line made them called Ethiopia, eventhough these people don't want to be part of Ethiopia. There are so many refugees in North Eastern region of Kenya. These refugees fled from rape, killing and looting made Ethiopian Government on Somali region in Ethiopia. I know every body in this world wants to live in a peace why we don't stand up and help those who wants to live peace in their homeland and stop Ethiopia and America killing innocent people in Ethiopia. I am sure since the end of the cold war there are so many lost of human lives than before the cold war. We know that live demands freedom and peace. I don't understand what it is their benefit from killing innocent people. I have never heard single word from western countries saying about ethiopian action against humanity. What happen to the rest of the world. South African Rep from United Nations talked violence of Ethiopia to United Nations ammunation sanction on Somalia. Kenyan Government just noticed that many Kenyan born people are in Ethiopian jails because these people are Muslims. This world needs wise people to rule or balance of power like a new cold war so those who do not have enough power to protect themselve would survive in peace.