Hitler exterminated 6 million Jews. In the United States alone, there have been more than 55 million abortions. Maybe Abortion should have been compared to Mao who killed 20 million. Or Pol Pot who killed 10+ million. Or Mussolini or Stalin or Lenin. So if you start adding up the millions murdered by dictators and compare with abortion numbers, abortion still is the biggest murderer.
Catholic School Criticized for Comparing Abortion to the Holocaust ⋆ The Constitution