These acts are not long ago acts by a less educated society. They are 21st century discrimination and racism of the most violent kind. Prosecutors and judges find the motivation for a crime most important in deciding punishment.
Lets not look to the past for the meaning of what rights an American has. Lets continue to enhance and include all citizens in the full umbrella of rights and opportunities. Why would the founding fathers include an amendment process, if they did not believe we could do better in future generations?