Consider the ideas of liberty and equality expressed in the Declaration of Independence and the preamble to the US constitution. Evaluate the work of the work of the reconstruction era to apply these principles.
https://teachingamericanhistory.org/library/document/the-enforcement-acts/
https://teachingamericanhistory.org/library/document/the-civil-rights-act-of-1866/
http://freedmensbureau.com/texas/brenhamoutrages.htm