In 1915 J. Stuart Blackton — by then a major figure running Vitagraph Studios — produced The Battle Cry of Peace, an explicitly interventionist film arguing that the United States should enter the Great War on the side of the Allies. The picture became a political lightning rod: former President Theodore Roosevelt emerged as one of its staunchest public supporters, lending the project a stamp of high-profile advocacy that blurred the lines between entertainment and partisan agitation. Blackton even persuaded General Leonard Wood to make an extraordinary in-kind contribution — an entire regiment of U.S. Marines to appear as extras — a staging coup that underscored the film’s militaristic tone. Upon release the film provoked a controversy that contemporary observers compared to the storm around D.W. Griffith’s The Birth of a Nation, with critics condemning it as outright propaganda and others praising its urgency. The debate over The Battle Cry of Peace illustrates how early feature films could become instruments of public persuasion and political conflict, and it marked one of the first times a major studio-era filmmaker found himself at the center of a national controversy over a film’s civic message.
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