Extreme

Some holy books contain horrific ideas. They advocate slavery, murdering one's children for misbehaving, human sacrifices to God, holy war, imperial conquest, torture, killing people for blasphemy, genocide, misogyny, and punishing people for their thoughts. That's all in The Bible, by the way. Sure, the Koran, and the even more reprehensible Hadith, advocate a lot of horrible stuff, but its ideas are not as alien to Judeo-Christian beliefs as one might imagine. In fact, a fair degree of Islam is simply plagiarized from Judaism, Christianity, and various religions of desert tribes which existed when Muhammad invented Islam. In the wake of terrorist action by Islamofascists in Paris, a political cartoon was published contrasting its vision of Islamic extremism and Christian extremism. The Islamic extremist says something along the lines of, "Accept Allah or I shall kill you," while the Christian extremist says something along the lines of, "I must tell you about Jesus even if it costs me my life." Real Christian extremists are nothing like the vision of the humble martyr depicted. While they are generally less lethal than their Muslim counterparts, they are just as evil.

When a Christian fundamentalist parent believes their minor child to be gay, there are options for them in the United States. Certain people can arrange a kidnapping under the cover of darkness, coming into the gay child's bedroom in the middle of the night prepared to use whatever degree of force and restraints may be necessary to place the child in a vehicle to be hauled off for conversion therapy. Once there, the people who run the camp may imprison the child there and perform basically whatever action they like to the end of turning the homosexual child into a heterosexual one. This can legally last until the child is 18, when parental permission is no longer sufficient to detain them. Only one state I know of, which is New Jersey, has outlawed this practice. Lest you think this practice is only advocated by a few nuts, here is a list of anti-gay Christian hate groups that either condone, financially support, or outright participate in it:
Abiding Truth Ministries
American Family Association
American Vision
Americans for Truth About Homosexuality
Catholic Family and Human Rights Institute
Chalcedon Foundation
Christ the King Church (Larkspur, Colorado)
Faithful Word Baptist Church
Family Research Council
Family Research Institute
Family Watch International
Generations With Vision
Help Rescue Our Children
Heterosexuals Organized for a Moral Environment (H.O.M.E.)
Illinois Family Institute
Liberty Counsel
Mission: America
Parents Action League
Pilgrims Covenant Church
Providence Road Baptist Church
Public Advocate of the United States (see Eugene Delgaudio)
Ruth Institute
SaveCalifornia.com
Sons of Thundr (Faith Baptist Church)
TC Family (Traverse City Family)
The Pray in Jesus Name Project
Tom Brown Ministries
Traditional Values Coalition
True Light Pentecost Church
Truth In Action Ministries
United Families International
Westboro Baptist Church
Windsor Hills Baptist Church
World Congress of Families/Howard Center for Family, Religion and Society
You Can Run But You Cannot Hide International
That wall of text means that fundamentalist Christianity, while less violent and lethal than Islamic fundamentalism, can claim no moral high ground.

My thought would be that acts of terrorism in the name of Islam are clearly based on things that actually appear in the Koran and the Hadith. Similarly, The Spanish Inquisition, slavery, sexism, and a number of other evils are clearly based on things that actually appear in The Bible. These unfortunate facts about the unpleasant aspects of scripture should not be used to imply that everyone, or even a majority, among their respective religions' adherents subscribe to them. Various interpretations and contexts can drastically change, downplay, or deem untenable aspects of scriptures for various denominations or individuals, resulting in more prosocial behavior and attitudes towards science, the western world, and modern civilization in general. If there's one thing a friend with his masters in divinity from Vanderbilt has taught me, it's that these books are by no means clear or easy to understand without a great deal of concerted effort and scholarship. The problem isn't Muslims themselves as much as it is bad ideas to which sufficient numbers of them subscribe to cause a global threat to civilization. Fred Phelps and my beloved childhood minister Brother Bob were both Christians. That goes to show that knowing someone's religion simply is insufficient to know the content of their character.

-Frank