The Ba Chúc massacre begins, which precipitates the Cambodian–Vietnamese War the same year.

The Ba Chúc massacre was the mass killing of 3,157 civilians in Ba Chúc, An Giang province, Vietnam, by the Kampuchea Revolutionary Army from 18 to 30 April 1978. It was a spillover of the Cambodian genocide which also targeted Vietnamese people mainly in Cambodia. The Khmer Rouge took the local villagers to temples and schools to torture and kill them. The residents who fled to the mountains in the following days were also brutally slaughtered. Almost all the victims were shot, stabbed or beheaded.