Original sentence: Critics say that such intervention, particularly by the Allied governments, might have saved substantial numbers of people and could have been accomplished without the diversion of significant resources from the war effort.In the decades since the Holocaust, some national governments, international bodies, and world leaders have been criticized for their failure to take appropriate action to save the millions of European Jews, Roma, homosexuals and other victims of the Holocaust
Edited sentence: While many civilians risked their lives during the Holocaust in order to save the millions of European Jews, Roma, homosexuals and other "undesirables," international bodies received heavy criticism for failure to act due to the post-war belief that intervention could have saved a substantial number of people and not have deflected from the war effort