Martial law was declared on May 20, 1989. Late on June 3 and early on the morning of June 4, military units were brought into Beijing. They used armed force to clear demonstrators from the streets. There are no official estimates of deaths in Beijing, but most observers believe that casualties numbered in the hundreds. | Martial law was declared on May 20, 1989. Late on June 3 and early on the morning of June 4, military units were brought into Beijing. They used armed force to clear demonstrators from the streets. There are no official estimates of deaths in Beijing, but most observers believe that casualties numbered in the hundreds. |