"I'm trying to say that when you read the basic teachings of Christianity in the Bible, there are no commands to kill infidels." Excerpted from
http://www.answers.com/Q/What_verses_in_the_Bible_advocate_killing_non-believers:
Anyone arrogant enough to reject the verdict of the judge or of the priest who represents the LORD your God must be put to death. Such evil must be purged from Israel. (Deuteronomy 17:12 NLT)
A man or a woman who acts as a medium or fortuneteller shall be put to death by stoning; they have no one but themselves to blame for their death. (Leviticus 20:27 NAB)
Whoever sacrifices to any god, except the Lord alone, shall be doomed. (Exodus 22:19 NAB)
Suppose you hear in one of the towns the LORD your God is giving you that some worthless rabble among you have led their fellow citizens astray by encouraging them to worship foreign gods. In such cases, you must examine the facts carefully. If you find it is true and can prove that such a detestable act has occurred among you, you must attack that town and completely destroy all its inhabitants, as well as all the livestock. (Deuteronomy 13:13-19 NLT)
They entered into a covenant to seek the Lord, the God of their fathers, with all their heart and soul; and everyone who would not seek the Lord, the God of Israel, was to be put to death, whether small or great, whether man or woman. (2 Chronicles 15:12-13 NAB)
If your own full brother, or your son or daughter, or your beloved wife, or you intimate friend, entices you secretly to serve other gods, whom you and your fathers have not known, gods of any other nations, near at hand or far away, from one end of the earth to the other: do not yield to him or listen to him, nor look with pity upon him, to spare or shield him, but kill him. (Deuteronomy 13:7-12 NAB)
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Now I'll grant you that Jesus Himself dials down the rhetoric in the NT, and I understand the concept of a "New Covenant". But Christians CHOSE to keep the OT as part of their Bible and frequently cite it to justify their prejudices and actions.
Are they as violent today as radical Islamists? No, of course not. But only because most Christian countries have strong secular populations that usually keep the Christian radicals at bay.
This is what the Melhem article posted above by PJ talks about: in most Islamic countries, there is only a small liberal faction caught in between the strongman dictator faction and the fundamentalist Islamist faction.