Final answer:
The segregation of whites and African Americans in courthouses exemplifies the Jim Crow laws system of institutional racism, which the Civil Rights Movement sought to dismantle.
Step-by-step explanation:
The way the whites and African Americans go in and sit in the courthouse shows a clear example of segregation. This practice of separating the races in public spaces and facilities was legally mandated by the system known as Jim Crow laws. These laws facilitated institutional racism and upheld the principle of 'separate but equal' that was established by the Plessy v. Ferguson case. Despite the claim of equality, the facilities and treatment of African Americans were almost always inferior, significantly contributing to the systemic inequality between Whites and African Americans. The Civil Rights Movement addressed these injustices, confronting both de jure segregation in the South and de facto segregation in the North.