Read about landmark cases that have changed history, from Marbury v. Madison to the challenge to Obamacare.

Some excerpts:

1857

Dred Scott v. Sandford was a highly controversial case that intensified the national debate over slavery. The case involved Dred Scott, a slave, who was taken from a slave state to a free territory. Scott filed a lawsuit claiming that because he had lived on free soil he was entitled to his freedom. Chief Justice Roger B. Taney disagreed, ruling that blacks were not citizens and therefore could not sue in federal court. Taney further inflamed antislavery forces by declaring that Congress had no right to ban slavery from U.S. territories.

1896

Plessy v. Ferguson was the infamous case that asserted that “equal but separate accommodations” for blacks on railroad cars did not violate the “equal protection under the laws” clause of the 14th Amendment. By defending the constitutionality of racial segregation, the Court paved the way for the repressive Jim Crow laws of the South. The lone dissenter on the Court, Justice John Marshall Harlan, protested, “The thin disguise of ‘equal’ accommodations…will not mislead anyone.”

1954

Brown v. Board of Education of Topeka invalidated racial segregation in schools and led to the unraveling of de jure segregation in all areas of public life. In the unanimous decision spearheaded by Chief Justice Earl Warren, the Court invalidated the Plessy ruling, declaring “in the field of public education, the doctrine of ‘separate but equal’ has no place” and contending that “separate educational facilities are inherently unequal.” Future Supreme Court justice Thurgood Marshall was one of the NAACP lawyers who successfully argued the case.