Rot Front was somewhat big and powerful communist organization in Germany and other European countries that existed in 20s and 30s of XX century. Raised fist was one of symbols of the movement and was also used as a salute. The symbol itself is much older than the movement and continues to exist these days. There is a candy factory in Moscow, Russia, called after Rot Front and one of their most famous products are Rot Front candies that are probably the only well-known artefact of that movement. For this series people were forming a fist around a Rot Front candy.