One of the most famous shifts in the ideology of the Supreme Court occurred in the 1950s, when the Court ruled that school segregation
was unconstitutional. This effectively overturned the 1896 ruling in
Plessy v. Ferguson, which permitted racial segregation. What
accounts for thls change in the Court's decision making?

Plessy v. Ferguson was a landmark 1896 U.S. Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine. The case stemmed from an 1892 incident in which African American train passenger Homer Plessy refused to sit in a car for Black people. Rejecting Plessy’s argument that his constitutional rights were violated, the Supreme Court ruled that a law that “implies merely a legal distinction” between white people and Black people

Plessy v. Ferguson was important because it essentially established the constitutionality of racial segregation. As a controlling legal precedent, it prevented constitutional challenges to racial segregation for more than half a century until it was finally overturned by the U.S. Supreme Court in Brownv.

Explanation:

hope this helps