the 1930s, the Great Depression affected Jewish businessmen and also increased economic antisemitism. Economic underdevelopment and perceptions of discrimination in Czechoslovakia led a plurality (about one-third) of Slovaks to support the conservative, ethnonationalist Slovak People's Party (: HSĽS). HSĽS viewed minority groups such as Czechs, Hungarians, Jews, and Romani people as a destructive influence on the Slovak nation, and presented Slovak autonomy as the solution to Slovakia's problems. The party began to emphasize antisemitism during the late 1930s following a wave of Jewish refugees from Austria in 1938 and anti-Jewish laws passed by Hungary, Poland, and Romania. In the 1930s, antisemitic rioting and demonstrations broke out, incited by the Slovak People's Party. During the rioting, professional Jewish boxers and wrestlers took to the streets to defend their neighborhoods from antisemitic gangs, and one of them, Imi Lichtenfeld, would later use his experiences to develop Krav Maga. The Holocaust Some 5,000 Jews emigrated before the outbreak of World War II and several thousands afterwards (mostly to the British Mandate of Palestine), but most were killed in the Holocaust. After the Slovak Republic proclaimed its independence in March 1939 under the protection of Nazi Germany, the pro-Nazi regime of President Jozef Tiso, a Catholic priest, began a series of measures aimed against the Jews in the country, first excluding them from the military and government positions. The Hlinka Guard began to attack Jews, and the "Jewish Code" was passed in September 1941. Resembling the Nuremberg Laws, the Code required that Jews wear a yellow armband and were banned from intermarriage and many jobs. By 1940, more than 6,000 Jews had emigrated. By October 1941, 15,000 Jews were expelled from Bratislava; many were sent to labor camps, including Sereď. Originally, the Slovak government tried to make a deal with Germany in October 1941 to deport its Jews as a substitute for providing Slovak workers to help the war effort. The initial terms were for 20,000 young men aged 16 and older for forced labour, but the Slovak government was concerned that it would leave many aged, sick, or child Jews who would become a burden on the gentile population. A deal was reached where the Slovak Republic would pay 500 Reichsmark for each Jew deported, and in return, the Germans would deport entire families and promise that the Jews would never return. This was billed as a humanitarian measure that would keep Jewish