Religion

There's a reason there are thousands of denominations of Christianity, and probably millions of independent practitioners, each one of them absolutely certain that they are right and that everyone else is doing it wrong. However, there are certain things that more of them have in common than not.

So, in the US, Christians are much more likely to discriminate against women, LGBTQ people, and religious minorities than non-Christians are. Most of them who do those things consider them to be good and positive acts, in accordance with the will of their god. The majority of Christian voters in 2016 voted for Trump, and would enthusiastically do it again if given the chance. What we don't see, and have never seen, is any tendency for Christians as a group to behave any better than non-Christians do as a group.