From an Iraqi blog I've been reading lately (HatTip: Jeff Jarvis) comes this amazing story:

It was probably the largest demonstration in Baghdad for months. It wasn't just against terrorism. It was against Arab media, against the interference of neighbouring countries, against dictatorships, against Wahhabism, against oppression, and of course against the Ba'ath and Saddam.
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Al-Jazeera estimated the size of the crowd as over ten thousand people.