Landmark Supreme Court cases hold significant importance as they often set legal precedents that shape the interpretation of laws and rights in a democratic society. These cases can influence societal norms and public policy, addressing fundamental issues like civil rights, freedom of speech, and the balance of government powers. For example, decisions like Brown v. Board of Education and Roe v. Wade have had profound impacts, shaping the legal landscape and prompting legislative changes. Thus, these cases are crucial for understanding the evolution of law and promoting justice within the democratic framework.