Genocide is a process. The important thing is to recognize the mechanisms. Waiting until some arbitrary number of people (say, 80%) are exterminated before giving it the official embossed and perforated genocide stamp is an entirely useless and navel gazing act. At the end of the day, the semantics are immaterial. It is the mechanisms which must be identified and combated, and they must be combated long before the editorial boards of the bourgeois papers start writing opinion pieces 10 years ex post facto saying "aww shucks, it really is a tragedy we allowed this to happen."