seamen, claiming allegiance to the SDS, hijacked the SS Columbia Eagle, a U.S.-flagged merchant vessel under contract with the U.S. government, carrying 10,000 tons of napalm bombs for use by the U.S. Air Force in the Vietnam War. The hijackers forced its master to divert to then-neutral Cambodia (which promptly was taken over by anti-Communists, who eventually returned to the ship to the U.S.). Kent State/Cambodia Invasion Protest, Washington, D.C.: After the Kent State shootings, on May 4, 100,000 anti-war demonstrators converged on Washington, D.C. to protest the shooting of the students in Ohio and the Nixon administration's incursion into Cambodia. Even though the demonstration was quickly put together, protesters were still able to bring out thousands to march in the Capital. It was an almost spontaneous response to the events of the previous week. Police ringed the White House with buses to block the demonstrators from getting too close to the executive mansion. Early in the morning before the march, Nixon met with protesters at the Lincoln Memorial but nothing was resolved and the protest went on as planned. National Student Strike: more than 450 university, college and high school campuses across the country were shut by student strikes and both violent and non-violent protests that involved more than 4 million students, in the only nationwide student strike in U.S. history. A Gallup poll in May shows that 56% of the public believed that sending troops to Vietnam was a mistake, 61% of those over 50 expressed that belief compared to 49% of those between the ages of 21–29. On June 13, President Nixon established the President's Commission on Campus Unrest. The commission was directed to study the dissent, disorder, and violence breaking out on college and university campuses. In July 1970. the award-winning documentary The World of Charlie Company was broadcast. "It showed GIs close to mutiny, balking at orders that seemed to them unreasonable. This was something never seen on television before." The documentary was produced by CBS News. On August 24, 1970, near 3:40 a.m., a van filled with ammonium nitrate and fuel oil mixture was detonated on the University of Wisconsin-Madison in the Sterling Hall bombing. One researcher was killed and three others were injured. Vortex I: A Biodegradable Festival of Life: To avert potential violence arising from planned anti-war protests, a government-sponsored rock festival was held near Portland, Oregon from August 28 to September