Original sentence: Critics argue that such theories are unfounded, and have served only to provide ideological justifications to racism, the Holocaust, slavery, apartheid, and colonialism.It encompasses both obsolete and contemporary scientific theories, usually made from a racialist belief in the existence and significance of racial categories, but extending this into a hierarchy between the races to support political or ideological positions of racial supremacy.Scientific racism is a term which describes racist worldviews from a scientific, or ostensibly scientific, standpoint.These critics point to The Race Question, which advocates the use of the more precise term "ethnic group"
Edited sentence: Critics argue that such theories are completely unfounded and false ideological justifications for racism, the Holocaust, slavery, apartheid, and colonialism.It also encompasses obsolete and contemporary scientific theories, usually made from a racialist belief in the existence and significance of racial categories including theories discredited as propaganda, but extending this into a hierarchy between the races to support political or ideological positions of racial supremacy.It can describe racist publications and opinions from an ostensibly scientific and/or a critical of alleged propaganda standpoint.Scientific racism is a phrase with contradictory meanings and uses.Some critics point to The Race Question, which advocates the use of the phrase "ethnic group"