World: Greetings from Victor Charlie

Drifting down the rivers from the hills come logs rigged with paper sails that bear Viet Cong propaganda messages to the U.S. Marines. More leaflets are strewn among the American dead on battlefields. All plug the same hard-sell theme: refuse to fight, desert to the Viet Cong. But lately, the Viet Cong are narrowing their sights. In an attempt to ride the upswing of racial disorder in the U.S., they are aiming their psychological offensive at the Negro fighting man. "Black G.I. in the U.S. Army!" exhorts one leaflet. "Twenty million of your fellow...