This poster propaganda was made after the soviets invaded Poland. In the poster, a desperate Polish Man is kissing a Russian Soldier who has saved him. At the top of the poster is a Russian text that translates into " Our Army is an army that liberate workers."
By the man's facial expression you can tell that the man is very thankful and compassionate for the Soldiers's work. This shows the contrast in today how someone would view this as gay rather then a man showing gratitude.