I stumbled upon these very singular graphic design pieces from 1920s and 1930s, they all come from Japan and are characteristic of what the country was experiencing: a massive social change.
I have collected below a selection of posters, mag covers and advertisements which gives you a very good insight of where the Japanese society was heading to: modern industry and technology. Western art and culture influences can be felt in those pieces as well as a growing incline towards a leftist political thought.
Is it me or some of that stuff reminds of a certain Shepard Fairey?
[Source: “Modernism on Paper: Japanese Graphic Design of the 1920s-30s”, (published 2003)]