“So has God and Christ been used to justify bigotry”
Not at anywhere the level that Darwinism has been used. I’m not a historian, but I’ve read that the number of people killed during the Inquisition per *decade* was something like the number of people killed by Nazis and Communists per *week*.
OK, that’s a vague recollection, but you get the point. We know, for example, that communists murdered something like 100,000,000 of their own countrymen during the past century. That’s why I get very annoyed when Christopher Hitchens, Richard Dawkins and other try to pin genocide and mass murder on religion.