Today, the Oromo are an impoverished and powerless numerical majority and political minority1 in the Ethiopian empire; they have been the colonial subjects of Ethiopia, former Abyssinia, since the last decades of the 19th century. As the Ethiopian state colonized the Oromo with the help European imperialism, it has continued to terrorize, dominate, and exploit them with the help of successive global hegemonic powers such as England, the former Soviet Union, and the United States. To change the deplorable condition of the Oromo people, the Oromo movement is engaging in national struggle to restore the Oromo democratic tradition known as the gadaa system and to liberate the Oromo people from colonialism and all forms of oppression and exploitation by achieving their national self-determination. A few elements of Oromo elites who clearly understood the impact of Ethiopian colonialism and global imperialism on the Oromo society had facilitated the emergence of the Oromo national movement in the 1960s and 1970s by initiating the development of national Oromummaa (Oromo national culture, identity, and nationalism). This paper focuses on and explores three major issues: First, it briefly provides analytical and theoretical insights. Second, the paper explains the past and current status of the Oromo people in relation to gross Oromo human rights violations. Third, it identifies and examines some major constraints and opportunities for the Oromo national movement and the promotion of human rights, social justice, and democracy.