Select all that apply. why were some vietnamese afraid for their lives when the communists took control of vietnam? they had supported the americans and south vietnamese government and feared communist reprisals. the communists had executed sympathizers of the south vietnamese government in hue during the tet offensive and many vietnamese thought they would do the same after they won the war. they thought the communists would bomb saigon's neighborhoods. they thought the communists would poison the water with agent orange.