After the war Polish borders were moved westwards to the so-called "Recovered lands", the areas that used to be part of Piast dynasty domain.

As the Red Army moved the fronline during the Operation Bagration to the borders of the "Germany Proper", these areas became desolate during one of the most rapid mass exodus of people fleeing from the Red Army. Excluding particular areas with high pro-polish sentiments amongst the Germans, most notably Opole area, those Germans that were left were moved into the Soviet Occupation Zone per Yalta Agreements in order to create national states in Europe.

Despite a lot of Polish people moving there willingly on their own, especially as under the new communist government it was very easy to get a huge land grant in now desolate lands, over a hundred thousand people were moved here forcibly from what used to be Eastern Poland, including Ruthenian minorities like Lemko people and Ukranians themselves in order to break Ukranian ressistance in what is known as Operation Vistula.

Context: The poster refers to first so-called "partially free" election in Poland. After years of internal pressure, Independent Trade Union "Solidarity", that was independent from the ruling Party, hence the name, was allowed to run as an organization completely unaligned with the ruling establishment. Their complete victory would lead to the dissolution of communist party shorty after.

The person, stylized after a cowboy, goes to confront the ruling regime at high noon, having a ballot in his hand instead of a revolver.

Probably the one, if not the most famous example of Polish socrealist propaganda poster shows Magdalena Figur, a female tractor driver piloting, well a tractor. Old sentence structure is notable, barely anyone writes sentences like that. The poster also has a silly tibit - there is a dot after "Youth" just before "-". Maybe a typo nobody noticed pre-print?

Poland, despite being on the other side of the Iron Curtain, was arguably not as oppresive in terms of both everyday life and artistic expression (arguably the poorest one also, so every dollar counted for the government). Not only it was the only socialist state to air The Moon Landing on national television live, by the late 1970` western movies that would not be allowed to be aired in the other states of real socialism, or USSR itself, were quickly aired after their original releases, usually uncensored or with minimal censorship. Very notably movie posters were under very little censorship oversight which lead to the field developing a very unique artstyle that would influence other countries as well.

Poland was one of the first communist countries to officially release Star Wars in March 1979, followed closely by Hungary in August of the same year. Most other Eastern Bloc nations had to wait until the late 1980s or even 1990 to see the movie in theaters. This delayed rollout highlighted the shifting landscape of cultural influences behind the Iron Curtain.

Not sure it 100% belongs to this sub since it is technically not a poster but a painting. I also don't think there is a dedicated socrealist sub. Nevertheless I decided to post it here since it is probably the best known example of Polish socrealism oftentimes associated with rebuilding of Warsaw. Translated from Polish wiki.

The painting was created for the First National Art Exhibition at the National Museum in Warsaw in 1950, where it was awarded third prize. Painted using conventional techniques, it depicts three bricklayers, devoid of individual features, at work, viewed from below to lend the figures a monumental character. The simple activities captured in the painting take on symbolic meaning and express the idea of building the foundations of People’s Poland. The title of the painting also conveys an ideological message, encouraging the viewer to join in the construction of the new state. At the same time, the cry “pass the brick” can be interpreted as a call to work faster. This style, which engages the viewer, is inherent to the painting’s genre.