(Simpler version): People have more rights than those stated in the Constitution
REDLICH, NORMAN. "Ninth Amendment." Encyclopedia of the American Constitution. Ed. Leonard W. Levy and Kenneth L. Karst. 2nd ed. Vol. 4. Detroit: Macmillan Reference USA, 2000. 1809-1813. Gale Virtual Reference Library. Web. 8 Dec. 2015.
Supreme Court Case with Ninth Amendment
Estelle Griswold and Dr. Charles Lee Buxton were arrested and convicted of offering services to prevent conceptions. Griswold would appeal the case, arguing that the state law associated with her crime violated the fourteenth amendment, but it actually fell under the ninth amendment. The U.S. Supreme Court ruled the Connecticut law to be unconstitutional, as it violated the "right to martial privacy. The law pointed out that, although the Bill of Rights don't specifically mention "privacy", it is implied through the ninth amendment as it's one of the rights that are nowhere in the Constitution.