They totally can, for instance: https://en.wikipedia.org/wiki/School_attacks_in_China:
> On March 23, 2010, Zheng Minsheng (郑民生)[7] 41, murdered eight children with a knife in an elementary school in Nanping,[8] Fujian province...
> An attacker named Wu Huanming (吴环明), 48, killed seven children and two adults and injured 11 other persons with a cleaver at a kindergarten in Hanzhong, Shaanxi on May 12, 2010...
> On 4 August 2010, 26-year-old Fang Jiantang (方建堂) slashed more than 20 children and staff with a 60 cm knife, killing three children and a teacher at a kindergarten in Zibo, Shandong province....
> The death toll has risen to nine in Friday's stabbing attack outside a middle school in northwestern China allegedly carried out by a former pupil seeking revenge for having been bullied....
etc.
