Debra Saunders must have been absent on the day her Civics class taught the most important case ever decided by the U.S. Supreme Court, so let's take a walk back in time. In 1803, the Supreme Court decided Marbury v. Madison. This case articulated the Judiciary's power of "judicial review," the power to decide the constitutionality of the actions of the other two branches of government (a law passed by the Legislative branch or an action by the Executive branch.) Ever since then, every citizen's rights have been protected by the Court's power of judicial review. The reason judicial review exists is to protect the rights of unpopular minorities against what Alexis de Tocqueville described as the "tyranny of the majority." In our system of government, the majority does not get to take away rights that are protected by the Constitution from a minority group, no matter how unpopular that group is.