Douglas Pike also described the Đắk Sơn massacre , in which the Vietcong used flamethrowers against civilians in Đắk Sơn , killing 252 , as a terrorist act . In May 1967 , Dr. Tran Van-Luy reported to the World Health Organization " that over the previous 10 years Communist terrorists had destroyed 174 dispensaries , maternity homes and hospitals . " Ami Pedahzur has written that " the overall volume and lethality of Vietcong terrorism rivals or exceeds all but a handful ( e.g. Algeria , Sri Lanka ) of terrorist campaigns waged over the last third of the twentieth century , " and that the VC used suicide terrorism as a form of propaganda of the deed . Arthur J. Dommen has written that the majority of those killed due to VC terrorism were civilians , caught in ambushes as they traveled on buses , and that the group burnt down villages and forcibly conscripted members
Đắk Sơn massacre
Đắk Sơn massacre
Communist terrorism