"At the school, Mr. Obama taught three courses, ascending to senior lecturer, a title otherwise carried only by a few federal judges. His most traditional course was in the due process and equal protection areas of constitutional law. His voting rights class traced the evolution of election law, from the disenfranchisement of blacks to contemporary debates over districting and campaign finance. Mr. Obama was so interested in the subject that he helped Richard Pildes, a professor at New York University, develop a leading casebook in the field.
His most original course, a historical and political seminar as much as a legal one, was on racism and law. Mr. Obama improvised his own textbook, including classic cases like Brown v. Board of Education, and essays by Frederick Douglass, W. E. B. Dubois, the Rev. Dr. Martin Luther King Jr. and Malcolm X, as well as conservative thinkers like Robert H. Bork."
https://mobile.nytimes.com/2008/07/30/us/politics/30law.html