Why did the Brown dicision not bring changes immediately?

The Brown v. Board of Education decision in 1954 declared racial segregation in public schools unconstitutional, but immediate changes were hindered by widespread resistance in many states. Many local governments and school boards implemented "massive resistance" strategies, delaying integration through various means, including legal challenges and political maneuvers. Additionally, the lack of a clear timeline or enforcement mechanism in the ruling allowed for continued segregation. It wasn't until the Civil Rights Movement gained momentum that significant changes began to occur in the 1960s.