From left to right
1. Chinese propaganda poster. Translation: "The Third World; the world's people can not be bullied; the people of China can not be intimidated." c. 1960s.
2. Illustrator Tomi Ungerer’s best-known radical protest poster, this print was first made in 1967 in response to the Vietnam War. A violent visualization of America forcing its ideals on the Vietnamese people.
3. "La lutte continue ("The struggle continues")". French May 1968 student revolution poster. Made at the Atelier Populaire.
4. Loose lips sink ships is an American English idiom meaning "beware of unguarded talk". The phrase originated on propaganda posters during World War II.