"Involuntary Martyrs"
StrategyPage says Al-Qaeda in Iraq has been a victim of its own success (in killing other Muslims, that is):
Al Qaeda web sites are making a lot of noise about "why we lost in Iraq." Western intelligence agencies are fascinated by the statistics being posted in several of these Arab language sites. Not the kind of stuff you read about in the Western media. According to al Qaeda, their collapse in Iraq was steep and catastrophic. According to their stats, in late 2006, al Qaeda was responsible for 60 percent of the terrorist attacks, and nearly all the ones that involved killing a lot of civilians. The rest of the violence was carried out by Iraqi Sunni Arab groups, who were trying in vain to scare the Americans out of the country.
Today, al Qaeda has been shattered, with most of its leadership and foot soldiers dead, captured or moved from Iraq. As a result, al Qaeda attacks have declined more than 90 percent. Worse, most of their Iraqi Sunni Arab allies have turned on them, or simply quit. This "betrayal" is handled carefully on the terrorist web sites, for it is seen as both shameful, and perhaps recoverable.
This defeat was not as sudden as it appeared to be, and some Islamic terrorist web sites have been discussing the problem for several years. The primary cause has been Moslems killed as a side effect of attacks on infidel troops, Iraqi security forces and non-Sunnis. Al Qaeda plays down the impact of this, calling the Moslem victims "involuntary martyrs." But that's a minority opinion. Most Moslems, and many other Islamic terrorists, see this as a surefire way to turn the Moslem population against the Islamic radicals. That's what happened earlier in Algeria, Afghanistan, Egypt and many other places. It's really got nothing to do with religion. The phenomenon hits non-Islamic terrorists as well (like the Irish IRA and the Basque ETA).
The senior al Qaeda leadership saw the problem, and tried to convince the "Al Qaeda In Iraq" leadership to cool it. That didn't work. As early as 2004, some Sunni Arabs were turning on al Qaeda because of the "involuntary martyrs" problem. The many dead Shia Arab civilians led to a major terror campaign by the Shia majority. They controlled the government, had the Americans covering their backs, and soon half the Sunni Arab population were refugees.
Meanwhile, the "Al Qaeda In Iraq" leadership was out of control. Most of these guys are really out there, at least in terms of fanaticism and extremism. This led to another fatal error. They declared the establishment of the "Islamic State of Iraq" in late 2006. ...When al Qaeda could not, in 2007, exercise any real control over the parts of Iraq they claimed as part of the new Islamic State, it was the last straw. (via Hot Air)
Islamic fascism is kind of like Communism - it gets a lot of sympathy and support in some parts of the world, until it's actually implemented.