Constitutional Amendment 15

The 15th Amendment appears to be the first attempt to curb the efforts of those who were trying to deny blacks the right to vote as explicitly established in the 14th amendment.

The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of race, color, or previous condition of servitude.

As history has shown, those people who still held their prejudices found more creative ways to deny that right. This is just further proof that there is no way to legislate what people will or should think – regardless of how well the social engineers concoct their plans.