Criticism of Christianity has a long history which stretches back to the initial formation of the religion in the Roman Empire. Critics have challenged Christian beliefs and teachings as well as Christian actions, from the Crusades to modern terrorism. The arguments against Christianity include the suppositions that it is a faith of violence, corruption, superstition, polytheism, homophobia, bigotry, pontification, abuses of women's rights and sectarianism.

Christian terrorism, a form of religious terrorism, comprises terrorist acts which are committed by groups or individuals who profess Christian motivations or goals. Christian terrorists justify their violent tactics through their interpretation of the Bible and Christianity, in accordance with their own objectives and worldview.