Why did members of the urban middle class in Brazil protest the coffee elite in the 1920s?

In the 1920s, members of the urban middle class in Brazil protested the coffee elite due to their frustration with the political and economic dominance of coffee oligarchs, who controlled much of the country's wealth and resources. This elite's focus on coffee exports marginalized other sectors and contributed to economic inequality. The middle class sought greater representation and reforms, advocating for a more diversified economy and political power that reflected their interests rather than those of the agrarian elite. These protests were part of a broader movement for modernization and democratization in Brazil.