"Le pouvoir du monde blanc est menacé chaque fois qu'un homme noir refuse d'accepter les définitions du monde blanc."

Simplified Meaning:

When society has clear and rigid roles that people must follow based on their race, it creates an imbalance of power between different groups. When a black person refuses to follow these roles and decides to define their own identity, it challenges this unfair system. Imagine a workplace where only men are seen as capable leaders. If a woman steps up, does an excellent job, and wins respect, it makes people question their old ideas about gender and leadership. Similarly, when a black person defies stereotypes and expectations, it makes others question the racist ideas that suggest one group is superior to another. This can make those who benefit from the current system feel threatened because their control and authority are being questioned. By defining themselves, black individuals can help change and break down these outdated and harmful beliefs.