Racism has played a role in genocides such as the Holocaust, the Armenian genocide, the Rwandan genocide, and the Genocide of Serbs in the Independent State of Croatia, as well as colonial projects including the European colonization of the Americas, Africa, Asia, and the population transfer in the Soviet Union including deportations of indigenous minorities. Indigenous peoples have been—and are—often subject to racist attitudes. Etymology, definition, and usage In the 19th century, many scientists subscribed to the belief that the human population can be divided into races. The term racism is a noun describing the state of being racist, i.e., subscribing to the belief that the human population can or should be classified into races with differential abilities and dispositions, which in turn may motivate a political ideology in which rights and privileges are differentially distributed based on racial categories. The term "racist" may be an adjective or a noun, the latter describing a person who holds those beliefs. The origin of the root word "race" is not clear. Linguists generally agree that it came to the English language from Middle French, but there is no such agreement on how it generally came into Latin-based languages. A recent proposal is that it derives from the Arabic ra's, which means "head, beginning, origin" or the Hebrew rosh, which has a similar meaning. Early race theorists generally held the view that some races were inferior to others and they consequently believed that the differential treatment of races was fully justified. These early theories guided pseudo-scientific research assumptions; the collective endeavors to adequately define and form hypotheses about racial differences are generally termed scientific racism, though this term is a misnomer, due to the lack of any actual science backing the claims. Most biologists, anthropologists, and sociologists reject a taxonomy of races in favor of more specific and/or empirically verifiable criteria, such as geography, ethnicity, or a history of endogamy. Human genome research indicates that race is not a meaningful genetic classification of humans. An entry in the Oxford English Dictionary (2008) defines racialism as "[a]n earlier term than racism, but now largely superseded by it", and cites the term "racialism" in a 1902 quote. The revised Oxford English Dictionary cites the shorter term "racism" in a quote from the year 1903. It was defined by the Oxford English Dictionary (2nd edition 1989) as "[t]he theory that distinctive human characteristics and abilities are