In 1-2 sentences, develop an argument to support the concept of judicial restraint in the Supreme Court's decisions of Plessy v. Ferguson and the concept of judicial activism in the Supreme Court's decision of Brown v. Board of Education.

Judicial restraint in the Supreme Court's decision of Plessy v. Ferguson was seen as necessary to uphold the principle of states' rights and respect the precedent of separate but equal established by previous cases. In contrast, the concept of judicial activism in the Supreme Court's decision of Brown v. Board of Education was crucial in addressing systemic injustice and advocating for the protection of equal rights for all citizens, even if it required overturning established precedent.