Children parade through the Martyr 's Cemetery with headbands that read '' Hussein '' and stores sell metal chains that some people will use to beat themselves , all part of a period of public mourning that commemorates the killing of Imam Hussein , the Prophet Muhammad 's grandson , during a battle 1,300 years ago in Karbala , Iraq .
Iraq /location/location/contains Karbala
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Iraq
LOCATION
Karbala
LOCATION
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