Late in April 1970 Nixon announced that Vietnam-ization was proceeding more rapidly than he had hoped, that communist power was weakening, and that within a year another 150,000 American soldiers would be extracted from Vietnam. A week later he announced that military intelligence had indicated that the enemy was consolidating its “sanctuaries" in neutral Cambodia and that he was therefore dispatching thousands of American troops to destroy these bases. (American planes had been bombing enemy sites in Cambodia for some time, although this fact was not revealed to the public until 1973.)
To foes of the war, Nixon’s decision seemed so appallingly unwise that some of them began to fear that he had become mentally unbalanced. The contradictions between his confident statements about Vietnamization and his alarmist description of powerful enemy forces poised like a dagger thirty-odd miles from Saigon did not seem the product of a reasoning mind.
National Guardsmen firing into a crowd of antiwar protesters at Kent students and injured eleven others. The shootings triggered massive protests across the nation.
State University killed four demonstrations and
Nixon’s shocking announcement triggered many campus demonstrations. One college where feeling ran high was Kent State University in Ohio. For several days students there clashed with local police; they broke windows and caused other damage to property. When the governor called out the National Guard, angry students showered the soldiers with stones. During a noontime protest on May 4 the guardsmen, who were poorly trained in crowd control, suddenly opened fire. Four students were killed, two of them women who were merely passing by on their way to class.
While the nation reeled from this shock, two students at Jackson State University were killed by Mississippi state policemen. A wave of student strikes followed, closing down hundreds ofcolleges, including many that had seen no previous unrest. Moderate students by the tens of thousands joined with the radicals.
The almost universal condemnation of the invasion and of the way it had been planned shook Nixon hard. He backtracked, pulling American ground troops out of Cambodia quickly. But he did not change his Vietnam policy, and in fact Cambodia apparently stiffened his determination. As American ground troops were withdrawn, he stepped up air attacks.
The balance of forces remained in uneasy equilibrium through 1971. But late in March 1972 the North Vietnamese again mounted a series of assaults throughout South Vietnam. Nixon responded with heavier bombing, and he ordered the approaches to Haiphong and other North Vietnamese ports sown with mines to cut off the communists’ supplies.