Iraqis in a northern town still traumatised by memories of the Islamic State group feared more violence Tuesday after hostilities between the military and a local militia erupted, people internally displaced by the fighting said. Tensions reached a fever pitch when Iraq’s military launched an offensive in Sinjar district Sunday to clear out armed elements of the YBS, a local militia comprised largely of minority Yazidis. The YBS has ties to the insurgent Kurdistan Worker’s Party, or PKK, a separatist movement banned in Turkey. The heavy fighting prompted over 3,000 people, most of them Yazidis…