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In page Slavery in Brazil:

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In 2012, Brazil passed an affirmative action law in an attempt to directly fight the legacy of slavery.[5] Through it Brazilian policy makers have forced state universities to have a certain quota of Afro-Brazilians. The percentage of Afro-Brazilians to be admitted, as high as 30% in some states, causes great social discontent that some argue furthers racial tensions.[6] It is argued that these high quotas are needed because of the unequal opportunities available to Afro-Brazilians.[3] In 2012 Brazil's Supreme Court unanimously held the law to be constitutional.[citation needed]