1) Brown v Board of Education ruled that racial segregation in public schools was unconstitutional, overturning the separate but equal doctrine established in Plessy v Ferguson.
2) Miranda v Arizona established that law enforcement must inform suspects of their Fifth Amendment right to remain silent and have an attorney present during interrogations while in custody.
3) The 15th and 19th Amendments guaranteed the right to vote regardless of race or sex, major advancements for civil rights by prohibiting discrimination in voting.