Established Judicial Review

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Ended "Separate but Equal"

Established the right to an attorney if one cannot afford counsel. 

Held that parents did not have to send their kids to high school as it violated their religious belief. 

Overturned School gun free zones stating that the Commerce Clause does not give Congress authority to regulate guns at/near schools. 

Established National Supremacy

Established "One Man, One Vote"

Held that students freedom of speech/expression does "not stop at the schoolhouse gate." 

Legalized abortion

Applied the previous ruling in D.C. v Heller which allows individuals the right to bear arms in all states. (14th amendment)

Limited Freedom of Expression if there is "clear and present danger"

Held that school sponsored prayer (public school) is unconstitutional. 

Expanded freedom of the press; limited government's ability to quiet the press. 

Prohibited racial gerrymandering

Held that under the First Amendment corporate funding of independent political broadcasts in candidate elections cannot be limited