Galahad said:
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I am a Christian and I believe that Christ was perfect and that everything he did was correct. Why shouldn't Muslims believe Muhammad was correct? It is not true that all Muslims understand the "literal" Qur'an in the same way. Otherwise there would not be divisions among Muslims (Shiites, Suni's etc). Calling on mainstream Christians to denounce abortion clinic bombers, for example, is an imperative. Calling on Muslims to denounce terrorism is also imperative. Failing to do so may mean they have feet of clay but it doesn't mean they are supporters of terrorists (Actions or inactions by nation-states notwithstanding).
Christians are also permitted to discuss Christ and criticize Christianity, Galahad. Muslims are NOT permitted to do this with Islam and create an environment where it is impossible for the rest of us to discuss it, too.
The number of people that bomb abortion clinics is so very small it would almost be inconsequential except that they've been successful and caused damage at times. The number of people that have perpetuated these terror attacks and murders in the name of Islam is not quite so very small and not quite at all inconsequential.
Further, Christ didn't advocate eradicating entire peoples. His final pronouncement before death wasn't that the world should have only one religion. He didn't believe that one should kill all the Jews, Christians, Hindus, etc. He didn't believe in one set of morals and ethics for one people and another set for another people.
Christ didn't believe that using violence and threats against non-Christians was okay. He didn't encourage violence for failure to submit to Christianity. Artists and intellectuals that offend Christians aren't killed or threatened. Christ didn't advocate this. All art and ideas must submit to Islam, Galahad, according to Muhammed. Christ didn't command this.
All religions must submit to Islam, according to Muhammed.
Treaties with nonMuslims and agreements with nonMuslims are considered invalid and it is not necessary to keep promises with nonMuslims, according to Muhammed. This is not Christ's view, not the view of Christianity.
According to Islam and Muhammed, Sharia is supreme. NonMuslims are considered second class citizens and all people are not equal before the law.
Islam is the only religion that advocates and encourages stealing the wealth and treasure of nonMuslims. Christianity does not do this.
If Christianity advocated these things (I'm an agnostic, btw-- my arguments aren't from a Christian perspective), this would be a different discussion.
Western ideals include a definition of morality that tends to support life (even if we disagree with what life is sometimes). Western definition of immorality tends to be anything that does not support life.
In Islam, morality is is anything that tends to support Islam and the spread of Islam. Immorality is anything that tends to impede Islam or the spread of Islam.
These are fundamental truthful differences. And they are important to recognize.
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Edited to add: You also mentioned the warring between Muslims. I'm not sure this proves your point. This means that these people just do not accept any dissent. Christians accept dissent and do not threaten and murder those that have different beliefs. Yes, some Christians have done this in the past, but it was not based on scriptural references. It was done in the name of Christ, but it wasn't something Christ advocated. Muhammed advocated this and, as you may or may not know, there are Suras, sira, and hadith to support this position.