15th Amendment

copied from: http://www.archives.gov/exhibits/charters/constitution_amendments_11-27.html

Passed by Congress February 26, 1869. Ratified February 3, 1870.
Section 1.
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--
Section 2.
The Congress shall have the power to enforce this article by appropriate legislation.

The 15^th Amendment provides all United States citizens the right to vote which can't be denied based on their race, color, or from being previously enslaved. Problems with this amendment is that states are able to flex their powers and create laws which could prevent a citizen from voting based on other factors like an intelligence test, poll tax or requiring them to have a valid state I.d. Which we will explore later in the 24^th amendment. 

This Is one of the measures taken to stop black people from voting. 

This video Features Ann Coulter and her racist views on how voting should take place.