Highlights of the second volume of Signal include:

Anarchist Manga in Japan  

Breaking Chains: Political Graphics and the Anti-Apartheid Struggle  

Selling Freedom: Promotional Posters from the 1910s  

Street Art, Oaxacan Struggle, and the Mexican Context  

Covering the Wall: Revolutionary Murals in 1970s Portugal  

Røde Mor: Danish printmaking, pop music, and politics