Ontological Empiricism
Everyone has their extremists, which tarnish the name and image of the rest. It's not just Christians.
This. No religion is safe from having its share of nutjobs. Be they Christian, Muslim, Jewish... I'm sure there are Hindu, Buddhist, Taoist, and Shinto extremists, but I haven't investigated that far. Kinda hard to say so when I haven't seen many in action.
But I've seen some nuts from fringe religions. Wiccans and Jedi who were a bit unstable (which is a bit surprising, considering the point of the latter, but that's humanity for you).
And then we have atheism, which itself is represented very poorly online by teenagers who think they're being edgy. Oh, and Richard Dawkins, who seems to just insult religious people on the grounds that they're "stupid" or "crazy," when the truth is, they just share different opinions than him.
A rational person would see little reason to care what other people believe in (or don't believe in). They would instead focus on how they
act in regards to it. Unfortunately, people are hardly rational creatures by nature, so then we have people acting like idiots in the name of Jesus, Allah, Yahweh, the Force, or Science.