I know a lot about Christians. And I know about Christian characters both in history and now.
Either these people are Christians too, even bad ones, but still Christians, or Christians don't get to claim their majority numbers since those numbers come from self proclaimed Christianity as their belief.
Westboro Baptist Church
https://en.wikipedia.org/wiki/Westboro_Baptist_Church
Charles Worley, Providence Baptist Church
Pastor calls for death of gays, lesbians - NY Daily News
Or how about the Edict of Compiegne?
https://en.wikipedia.org/wiki/Edict_of_Compiègne
Printing presses, when first invented, were highly regulated once it was realized that people would start printing their own beliefs and spreading those beliefs around. This was in the name of Christian purity, from both Protestants and Catholics.
Arkansas, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, and Texas all have laws still on the books that say atheists cannot hold public office, and at least one atheist government official in Asheville, NC faced a potential threat to use this law against him when he was elected (showing that some really do believe they should not hold office). Others argue that atheists should not be allowed to testify since swearing to tell the truth on the bible or any other holy book or symbol would be meaningless to them.
Christians went on witch hunts during the period between the 15th and 18th centuries, killing men and women deemed witches, said to worship the devil and attempting to sway people away from Christianity. Death had been a "just punishment" for buggery for a long time, before about the last century or so, even if the relationships were consensual.
So what part is it that you think is not true? That there aren't some Christians who would like to force others to live under Christian rules, force them to be Christians or kill nonChristians? Because you would be wrong. Those Christians are out there.