Pepeng Shotgun(1981)

The feud between the Medranos (poor but respected in the society) and the Sablantes (wealthy and corrupt) dates back to World War II where Joaquin Sablante was a Japanese collaborator while Pablo Medrano was a guerilla leader. The feud erupts anew when Pepe Medrano accidentally shoots Rex Sablante in a night club and when Pablo opposes Manolo Sablante's mayoral bid. Elected through fraud, Manolo has had Pablo killed, thus beginning a string of murders and counter-murders which eventually wipes out both families.