The Badr group and the Mahdi Army militia loyal to Moktada al-Sadr , a Shiite cleric whose power base is in the Baghdad slum of Sadr City , are believed to have played a leading role in the Shiite death squads that have killed hundreds of Sunnis in revenge for Sunni insurgent attacks on Shiite targets .
Baghdad /location/location/contains Sadr City
DT NNP NN CC DT NNP NNP NN JJ TO NNP NNP , DT JJ JJ WP$ NN NN VBZ IN DT NNP NN IN NNP NNP , VBP VBN TO VB VBN DT VBG NN IN DT JJ NN NNS WDT VBP VBN NNS IN NNPS IN NN IN NNP JJ NNS IN JJ NNS .
Baghdad
LOCATION
Sadr City
LOCATION
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