Alison Des Forges , top adviser for Human Rights Watch 's Africa Division , killed . Spent years in Rwanda , documented genocide , tried in vain to warn the world . Group calls her loss devastating blow to human rights activism and Rwanda . Comment:
Alison Des Forges , top adviser for Human Rights Watch 's Africa Division , killed . Spent years in Rwanda , documented genocide , tried in vain to warn the world . Group calls her loss devastating blow to human rights activism and Rwanda . Des Forges wrote book on Rwanda , was working on report on killings in Congo .