Dassler brothers feud
The Dassler brothers feud was a conflict between two brothers and their respective shoe manufacturers, Adolf ("Adi") and Rudolf ("Rudi") Dassler, in the latter half of the 20th century. Their feud led to the creation of Adidas and Puma, two of the largest shoe manufacturing companies in the world, and started a long-lasting rivalry between the two companies, reflected in rivalries between football clubs and a culture of animosity between Puma and Adidas employees that divided their home town.