Islam, that "religion of peace", is surrounded and infiltrated by some of the vilest violence the world has ever known. Infidels are not only to be killed (if they don't convert) but tortured as well. Incidentally, an infidel is someone that does not adhere to the prevailing religion around them. That fact makes Muslims in America infidels.
CAIR is a dangerous but very powerful organization operating in America. They have the ear of and influence on many politicians. Last year they forced the resignation of Michael Graham, a popular radio host in DC, because he took issue with some of their statements. Not unlike the American Nazi party in the 30's and 40's, they need to be carefully watched and monitored.

How can we possibly "dissociate Islam from terrorism", when the terrorists are hollering that this is a "holy war" in the name of Allah?

What needed to be said is that we don't need to associate every Muslim with terrorism.

Why is it that the media never stands up for Christians? Christianity can get smeared all over the place and we are left to fend for ourselves.

In an earlier time Christianity was directly associated with terrorism. Then, more recently, Christians (for the most part) grew out of it. This left a void and Islamofascism gladly stepped in. Here is how Merriam-Webster defines Fascism:
1 : A political philosophy, movement, or regime (as that of the Fascisti) that exalts nation and often race above the individual and that stands for a centralized autocratic government headed by a dictatorial leader, severe economic and social regimentation, and forcible suppression of opposition
2 : a tendency toward or actual exercise of strong autocratic or dictatorial control
Iran and its leader are a perfect examples of this.

Christians in many Arab countries are left to fend for themselves or live their lives in secret. Here in America, thank God, Allah, Buddha, Visnu or whatever deity we can worship (or not) as we please. As far as the MSM covering such a story, don't hold your breath. That would be considered as pandering to Christians or worse yet, to American Patriotism.

I know its a cheesy movie line but it does hold some truth that (paraphrasing here): One govt.'s terrorist is another another govt.'s revolutionary.

Don't get all wrapped up blaming all Muslims for what a small percent did. Hitler convinced many Germans that we needed an Arian nation. They were going to exterminate the Jews. Most Christians know this to be wrong. Christianity does not equal Terrorism though, anymore than all of Islam does. Teachings from the Qu'ran and from their prophet Mohammed teach non-violence. Some are just radical. We need to deal with radicals, not all of Islam. Iraq was not the hot bed of the radical action unfortunately and we have wasted time and money there rather than finding and dealing with leaders of Al Queda.