On April 29, 1970, President Nixon ordered American troops into Cambodia to track Viet Cong forces. The Vietnam War was already deeply unpopular and dividing America, but Nixon had run on a campaign of ending the war with honor. He asked Americans for patience in a famous November 1969 speech urging the “silent majority” of Americans who were not out protesting to stand by him. Now he was expanding the war, “leaving Vietnam through Cambodia” as the comedian George Carlin put it.
In front of Federal Hall and under the statue of George Washington, construction workers stormed a student protest against the Vietnam War and chased both students and bystanders through the streets, beating and kicking them. Known as the Hard Hat Riots, it sparked two weeks of protests, counter protests and marches. Historians and journalists have debated the meaning of the incident ever since.