Iraqi Shiite fighters parade with their weapons on June 21, 2014 in the central Iraqi Shiite city of Karbala. Shiite fighters paraded in Baghdad and south Iraq in a dramatic show of force aimed at Sunni militants who overran swathes of territory in a crisis threatening to rip the country apart.  AFP PHOTO  /MOHAMMED SAWAF        (Photo credit should read MOHAMMED SAWAF/AFP/Getty Images)