When the Nazis invaded the Soviet Union, Heinrich Himmler published a booklet, called "Der Untermensch". This brochure was distributed in Germany: it was made to increase the hatred towards the people of the Soviet Union (note: not the Slavic people, the term Slavic people never occurs in the brochure). The booklet was very popular, also with the German allies, such as the people in Croatia, Slovakia or Bulgaria. These people received copies in their own language. The booklet didn't provide much information about the Soviet union, it was mainly used to race hatred. Some people in the Nazi government were against the publication of the booklet: they thought they could convince the common people of the Soviet Union to fight against the Bolsheviks in power. During 1942, the publication of the booklet was stopped.