回复：糊涂啊糊涂，死了都不知道谁是真正的凶手。

Mao was. But I do not think Mao told anyone to kill the teachers, just like no one knows who ordered the tanks to kill the students in 1989. It was likely the students were out of control and killed the teachers. Many of them were under 18 and would not have the same responsibilty as adults.