sentences:  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.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.