The seating arrangement on this southern bus reflects changes started by the ruling in Brown v. Board of Education. In the image we can see both White and African-American people using the same bus. It's even possible to watch a young African-American girl seated next to a white woman.
Case Brown v. Board of Education is a landmark judicial ruling by the United States Supreme Court that declared state laws that established separate schools for African-American and white students denied equality of educational opportunities.
The ruling was delivered on May 17, 1954, unanimously (9-0) by the Warren Court; and established that "separate educational facilities are inherently unequal". With this, the Supreme Court reversed the existing precedents from Plessy against Ferguson in 1896. As a result of this ruling, racial segregation came to be considered as a violation of the Equal Protection Clause of the Fourteenth Amendment to the United States Constitution. This ruling opened the way for racial integration and achieving civil rights for African Americans.