Besides the Mary Dudziak book Justin recommended the other day, a more recent and heavily documented study I dipped into recently, http://www.hup.harvard.edu/catalog/BORCOL.html The Cold War and the Color Line American Race Relations in the Global Arena by Thomas Borstelmann
Borstelmann...analyzes the history of white supremacy in relation to the history of the Cold War, with particular emphasis on both African Americans and Africa. In a book that makes a good supplement to Mary Dudziak's Cold War Civil Rights, he dissects the history of U.S. domestic race relations and foreign relations over the past half-century...This book provides new insights into the dynamics of American foreign policy and international affairs and will undoubtedly be a useful and welcome addition to the literature on U.S. foreign policy and race relations. Recommended.
--Edward G. McCormack, Library Journal
-- Michael Pugliese