The worst attack on civilians came in summer of 1998 when the Taliban swept north from Herat to the predominantly Hazara and Uzbek city of Mazar-i-Sharif, the largest city in the north. Entering at 10 am on 8 August 1998, for the next two days the Taliban drove their pickup trucks "up and down the narrow streets of Mazar-i-Sharif shooting to the left and right and killing everything that moved — shop owners, cart pullers, women and children shoppers and even goats and donkeys."[55] More than 8000 noncombatants were reported killed in Mazar-i-Sharif and later in Bamiyan.[56] Contrary to the injunctions of Islam, which demands immediate burial, the Taliban forbade anyone to bury the corpses for the first six days while they rotted in the summer heat and were eaten by dogs.[57] In addition to this indiscriminate slaughter, the Taliban sought out and massacred members of the Hazara, a mostly Shia ethnic group, while in control of Mazar.
While the slaughter can be attributed to several factors — ethnic difference, suspicion of Hazara loyalty to their co-religionists in Iran, fury at the loss of life suffered in an earlier unsuccessful Taliban takeover of Mazar — the belief by some Sunni Taliban that the Shia Hazaras were guilty of takfir (apostasy) may have been the principle motivation. It was expressed by Mullah Niazi, the commander of the attack and governor of Mazar after the attack, in his declaration from Mazar's central mosque:
"Last year you rebelled against us and killed us. From all your homes you shot at us. Now we are here to deal with you. The Hazaras are not Muslims and now have to kill Hazaras. You either accept to be Muslims or leave Afghanistan. Wherever you go we will catch you. If you go up we will pull you down by your feet; if you hide below, we will pull you up by your hair."[27]
Hazara also suffered a siege by the Taliban of their Hazarajat homeland in central Afghanistan and the refusal by the Taliban to allow the UN to supply food to Hazara in the provinces of Bamiyan, Ghor, Wardak and Ghazni.[58] A month after the Mazar slaughter, Taliban broke through Hazar lines and took over Hazarajat. The number of civilians killed was not as great as in Mazar, but occurred nevertheless.[59]
During the years that followed, rapes and massacres of Hazara by Taliban forces were documented by groups such as Human Rights Watch.[60]