 Heydrich came to Prague to enforce policy, fight resistance to the Nazi regime, and keep up production quotas of Czech motors and arms that were "extremely important to the German war effort". He viewed the area as a bulwark of Germandom and condemned the Czech resistance's "stabs in the back". To realise his goals Heydrich demanded racial classification of those who could and could not be Germanized. He explained, "Making this Czech garbage into Germans must give way to methods based on racist thought." Heydrich started his rule by terrorising the population: 92 people were executed within three days of his arrival in Prague. Their names appeared on posters throughout the occupied region. Almost all avenues by which Czechs could express the Czech culture in public were closed. According to Heydrich's estimate, between 4,000 and 5,000 people were arrested by February 1942. Those who were not executed were sent to Mauthausen-Gusen concentration camp, where only four per cent of Czech prisoners survived the war. In March 1942, further sweeps against Czech cultural and patriotic organisations, military, and intelligentsia resulted in the practical paralysis of Czech resistance. Although small disorganised cells of Central Leadership of Home Resistance (Ústřední vedení odboje domácího, ÚVOD) survived, only the communist resistance was able to function in a coordinated manner (although it also suffered arrests). The terror also served to paralyse resistance in society, with public and widespread reprisals against any action resisting the German rule. Heydrich's brutal policies during that time quickly earned him the nickname "the Butcher of Prague".
