In adition to your project on the Rwandan genocide you may want to research the genocide in Burundi.  In Rwandi it was the Hutu's killing the Tutsi's and in Burundi (twenty years earlier) it was the Tutsi's killing the Hutu's.  Interesting tie in for your paper.  A great book to read is Century of Genocide second edition.  Also there is another book, I forget the exact title, but it's something like "We regret to inform you that tomorrow we will be killed along with our families:  stories from rwanda" or something like that.  Both excellent books.  Also look on the UN website and do a search for Rwanda.