Watch “Selling” World War I to the American Public: How Posters Shaped Public Opinion. During a Facebook Live chat, ABMC staff members Eric Marr and Sarah Herrmann looked at four posters used in the United States during World War I. From influencing public opinion after the sinking of the Lusitania to encouraging the role of women in the war effort, posters were a key communication tool during the Great War. Watch as Marr and Herrmann dissect the posters, talking about the colors used, the depiction of American women, the animal-like depiction of German forces, and more. Watch the full chat below.