UN General Assembly
1972

163. There is another type of pollution, however, which is far more dangerous and difficult to control or eliminate. This is the pollution of racism and apartheid. It is a pollution both of the mind and of the body and, more significantly, it threatens to pollute the conduct of international relations. It is a pollutant the removal of which has persistently dogged the efforts of this Assembly and all the devices known to civilized state-manship.