 
 <prompt> Wetin be di worst form of oppression wey Jewish people face? Based on di last question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Throughout history, many rulers, empires and nations don oppress their Jewish populations or dey try wipe dem out completely. Methods wey dem use range from expulsion to outright genocide; inside nations, often di threat of these extreme methods dey enough to silence dissent. The history of antisemitism include the First Crusade wey result in di massacre of Jews; the Spanish Inquisition (led by Tomás de Torquemada) and the Portuguese Inquisition, with their persecution and autos-da-fé against the New Christians and Marrano Jews; the Bohdan Chmielnicki Cossack massacres for Ukraine; the Pogroms wey the Russian Tsars support; as well as expulsions from Spain, Portugal, England, France, Germany, and other countries wey the Jews don settle. According to a 2008 study wey dem publish for the American Journal of Human Genetics, 19.8% of the modern Iberian population get Sephardic Jewish ancestry, wey show say the number of conversos fit don pass wetin dem originally think. 