What events contributed to America's unsettling feelings during the 1970s

1.The U.S. Senate repeals the Gulf of Tonkin resolution that had given Presidents Johnson and Nixon sweeping powers in the Vietnam War.

2.U.S. President Richard Nixon orders an invasion of Cambodia, widening the war in Vietnam. In protest, millions march across the U.S. University campuses are shut down by student strikes. Four protestors at Kent State University in Ohio are killed by National Guard troops.