Posters function as vehicles to inform, but also educate and even manipulate. They reflect the societal struggles for ideas, power, or wealth and they give a powerful voice to citizens on different social, cultural or political issues. In other words, posters can be agents and witnesses of ideological confrontations in the European history, reflecting the situations of the moment and providing us with a rich record of European stories. The topic is therefore an appropriate learning tool for citizens and younger students alike, to strengthen media literacy, and help explore the historical evolution of the ‘public sphere’ in Europe.