Gangnam Blues (2015) on Netflix

Jong-Dae and Yong-Ki make a living by picking up paper and empty bottles. Both then join different gangster clan and becomes involved in a struggle of political interests over development in Gangnam, Seoul.

In the 1970s, during the height of political corruption, Gangnam, the southern part of Seoul is starting to be transformed into a developed area. Childhood friends Jong-dae and Yong-ki struggle to get by, until their shanty homes are demolished by local thugs. Desperate for cash, they get involved in violent political clashes, and are separated during one of the skirmishes. Three years later, Jong-dae lives as an honest man with former gang leader Kil-su. Meanwhile, Yong-ki has joined Seoul's most powerful criminal organization, the Myeongdong-pa. As a gangster, Yong-ki is entangled in a high-stakes battle over land in Gangnam, all in the name of putting together secret presidential election funds that drive up the value of the city. As the gangs fight over the rights to various plots of land, Yong-ki is captured and interrogated by a rival gang. The southern part of Stransformed into a developed area.

—tsheringtashi75

South Korea, early-1970s. The government decides to redevelop the Gangnam area south of Seoul, an area that is currently essentially a shanty town. This redevelopment will mean wealth for property owners and developers and corrupt politicians waste no time in feathering their nests. Also into this vacuum steps several criminal gangs, fighting over land, and often working on behalf of the politicians. Caught up in this is a resident of Gangnam, Jong-dae, who discovers that by joining one of the gangs he can pull himself up out of his poverty.

—grantss