In the 20th century, a new category of labor camps developed for the imprisonment of millions of people who were not criminals per se, but political opponents (real or imagined) and various so-called undesirables under communist and fascist regimes, both totalitarian. Some of those camps were dubbed "reeducation facilities" for political coercion, but most others served as backbones of industry and agriculture for the benefit of the state, especially in times of war.[citation needed] Convention no. 105 of the United Nations International Labour Organization (ILO), adopted internationally on 27 June 1957, abolished camps of forced labor.[1]