That was the aim of some crusades, there were also the northern crusades which had the goal of slaying pagans and forcibly converting people to Christianity. Obviously not all war comes from religion, but Christianity does seem to have a penchant for interfaith violence.
Not only have there been an out sized number of sex abuse scandals involving christian churches (most prominently the Catholic church) there’s been a clear pattern of retaliation, cover-ups, and defense of abusers. When there’s a scandal in a public school, the offender is fired and indicted. The church has routinely shielded offending priests, shuffling them around to avoid accountability.
Nazi Germany was theistic, 98.5% of Nazis were Christians. Their belt buckles had “God is with us” inscribed on them. There has been more violence waged against theists by other theists than by anti-theists. Interfaith wars, sectarian violence, pogroms, inquisitions, forced conversions, over a thousand years of history shows clear patterns of religious violence. The USSR was anti-theistic (at least originally), and their persecution of religious people was wrong, but pretending that every anti-theist supports violent purges of the faithful is absurd. I am not an anti-theist, but I have friends who are, and they just want to be left alone.