"The persecution of intellectuals and cadres has been widely publicized both within and outside China. It is less well known that while virtually all factions involved in the Cultural Revolution engaged in violence and committed atrocities in what became a seemingly endless cycle of violence and revenge, the greatest atrocities and a heavy share of the killings appear to have been the work of the PLA, especially in the general repression of radical Red Guard and workers' organizations in the summer of 1968. It is hardly surprising that this should have been the case when an armed, organized military force was given (or assumed) a free hand to rid the country of an anarchistic and poorly armed popular movement whose members had perhaps taken too literally the Maoist slogan "Dare to rebel.""
January 1, 1970
https://en.wikiquote.org/wiki/Cultural_Revolution