Aaron Glantz of Pacifica Radio in his book on the war relates his visiting the mass graves.
62 pgs. photos here, http://massgraves.info/ http://www.phrusa.org/research/iraq/ Mass Graves http://hrw.org/campaigns/iraq/graves/slideshow_as2/slideshow_as2.html
Anthony Shadid in his new book on Iraq and the war, has many accts. of Ba'athist political repression/mass killing.
-- Michael Pugliese