why do the Iraqi protesters want us to leave?

[horhay_achoa]

I want to start by saying I don't really know anything about this war, or politics in general, so I am not going to be able to contribute much to this debate. I was going to post it in GQ, but I think the subject matter would have turned it into a debate anyway, so I am going to post it here...

Why are there so many Iraqi people protesting to get the U.S. out of Iraq? I mean just last week they were dancing in the streets, now they want us to leave? The thing that confuses me the most is this: what do they think is going to happen if we leave? I think the most likely result of us leaving would be that Saddam, or people loyal to him, would take their remaining tanks and military supplies and use them to get back into power. The second most likely scenario I can see is that some other dictator rises to power.
It just seems to me that a legitimate government has no chance of forming out of total anarchy. At least with U.S. forces there to keep the bad guys from strong arming their way back to the top, there is a chance that some form of democracy could get started. I don't know...