Do the ideals of the United States such as Liberty, Equality and Freedom come into conflict with ideas of slavery? 

Using the documentary, The Age of Slavery (1800-1860): The African Americans Many Rivers to Cross, write one post that starts a thread (at least 300 words, but not more than 500 words) and two replies to others (each at least 100 words long) answering the following questions: How has slavery shaped U.S. History?  Do the ideals of the United States such as Liberty, Equality and Freedom come into conflict with ideas of slavery?

How has Race been used to justify oppression? What do you think can be done to change modern perceptiochons of race in the United States?