in the barrels of MP's rifles, as seen in famous photographs of the event (such as Flower Power and The Ultimate Confrontation: The Flower and the Bayonet). Norman Mailer documented the events surrounding the march, and the march on the Pentagon itself, in his non-fiction novel, The Armies of the Night. In November 1967 a non-binding referendum was voted on in San Francisco, California which posed the question of whether there should be an immediate withdrawal of American troops from Vietnam. The vote was 67% against the referendum, which was taken by a Johnson administration official as support for the war. 1968 On January 15, 1968, over five thousand women rallied in D.C. in the Jeannette Rankin Brigade protest. This was the first all female antiwar protest intended to get Congress to withdrawal troops from Vietnam. On January 18, 1968, while in the White House for a conference about juvenile delinquency, black singer and entertainer Eartha Kitt yelled at Lady Bird Johnson about the generation of young men dying in the war. January 30, 1968 – Tet Offensive was launched and resulted in much higher casualties and changed perceptions. The optimistic assessments made prior to the offensive by the administration and the Pentagon came under heavy criticism and ridicule as the "credibility gap" that had opened in 1967 widened into a chasm. February – Gallup poll showed 35% approved of Johnson's handling of the war; 50% disapproved; the rest, no opinion. [NYT, 2/14/68] In another poll that month, 23% of Americans defined themselves as "doves" and 61% "hawks." March 12 – anti-war candidate Eugene McCarthy received more votes than expected in the New Hampshire primary, leading to more expressions of opposition against the war. McCarthy urged his supporters to exchange the 'unkempt look' rapidly becoming fashionable among war opponents for a more clean-cut style to in order not to scare voters. These were known as "Clean Genes." March 16 – Robert F. Kennedy joined the race for the US presidency as an anti-war candidate. He was shot and killed on June 5, the morning after he won a decisive victory over McCarthy in the Democratic primary in California. March 17 – Major rally outside the U.S. Embassy in London's Grosvenor Square turned to a riot with 86 people injured and over 200 arrested. Over 10,000 had rallied peacefully in Trafalgar Square but met a police barricade outside the embassy. A