Nike is the most valuable sports brand worth $26 billion. Its famous slogan "Just Do It" was created in 1988 and has been highly successful in advertising. The slogan reflects Nike's strategy of advocating for diversity and motivating people of all backgrounds. While the campaign has been largely positive, Nike faced controversies in the 1990s over poor working conditions at its overseas manufacturing plants, though it has since improved transparency and factory conditions. The dynamic model shows how the campaign reached a broad public while facing some ethical criticism regarding its production practices.