Abbas seems friendly enough, and laughs easily. As his car breezes through Iraqi army checkpoints at the entrance to Baghdad's notorious and sprawling Sadr City slum, he talks about killing Sunnis. "We caught Takfiris [members of a fundamentalist Sunni Islamist sect] who were [working] with the Americans. We didn't want to kill them, but the government was too weak to do anything at the time. So we killed them all and put them in a big grave."
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