criminal suspects have a right to counsel during police interrogations under the 6th Amendment.

internment constitutional; equal protection is not absolute; 14th amendment

federal supremacy; states cannot tax a federal institution

The court case giving states rights to regulate rail roads

freedom of speech is not absolute; 1st amendment

Established that state courts could not use evidence that was gained illegally; 4th amendment

allowed for the black armbands to be worn to protest against the Vietnam War

break up of a monopoly of railroads

Separate but equal not legal; reversed the Plessy decision

established "separate but equal' doctrine used in the first half of the 20th century

Congress could use the power granted to it by the Constitution's Commerce Clause to force private businesses to abide by the Civil Rights Act of 1964.