The poster is a North Korean poster advocating a forceful retaliation against the oppressive American regime. The image says as much. Thanks to der wife for the translation and to Dre for the article.
"But is anti-American sentiment as rampant as it seems? In their new edited volume, "Anti-Americanisms in World Politics" (Cornell University Press), international relations scholars Peter Katzenstein and Robert Keohane bring together a distinguished group of social scientists to consider how much anti-Americanism there is, and whether, in fact, anti-Americanism is any one thing at all.
The plural "anti-Americanisms" in the book's title reveals its core insight: Anti-Americanism is not a single, unitary phenomenon. Instead, Katzenstein and Keohane suggest there are four distinct strains."