Those who are critical of the term are in the right. There have been mass executions throughout history even comparable to the amount of people killed during WW2 to some degrees. Systematic mass killing was not unique to the nazi dictatorship. The problem with the article is that it is centric to killing against people with judaic religion, but the Nazis killed many more people there. Wikipedia should be neutral and objective, and this article emphasizes solely the suffering of one group of people - in doing so, it automatically marginalizes everyone else who was systematically hunted and executed by the Nazi.