China became a communist regime in 1949 and immediately began asserting territorial designs on Tibet. Communist China invaded and occupied Tibet in 1950. Tibetan hopes that a national uprising that erupted in Lhasa on March 10, 1959 would drive the Chinese occupiers out of their homeland. Instead His Holiness the Dalai Lama had to flee to India to avoid imprisonment or assassination as the Chinese communists crushed the uprising. March 10, 1959 is remembered by Tibetans as the day of the National Uprising against occupation.