The Court ruled that Blacks “are not included, and were not intended to be included, under the word ‘citizens’ in the Constitution… On the contrary, they were at that time (1787) considered as a subordinate and inferior class of beings…so far inferior, that they had no rights, which the White man, was bound to respect.”

http://en.wikipedia.org/wiki/Dred_Scott_v._Sandford

Dred Scott, a slave who sued for freedom

Dred Scott, a slave who sued for freedom