Is that true? I haven't checked the facts.

There was also Hitler, and his reign had nothing to do with equality, but history shows that the rabid antisemitism he used as a tool began with the early Church, and 80% of Germans during the war identified as Catholic. While the Holocaust wasn't conducted in the name of Christianity, without Christianity none of the seeds of antisemitism would have been sewn. There were also the Crusades, which at the time made all the papers and nightly news.