For the city 's Muslim population , the day is marked Recording by the `` first bullet '' fired Use_firearm by Hasan Tahsin at the Greek standard bearer at the head of the troops , the murder Committing_crime by bayonet coups of Miralay Fethi Bey for refusing Agree_or_refuse_to_act to shout Vocalizations `` Zito Venizelos '' and the killing Killing and wounding Bodily_harm of unarmed Turkish soldiers in the city 's principal casern , as well as of 300–400 civilians .