I want to know the answer to the following question:
What resulted in the massacre of Jews?
All the background I'm provided with is that "According to a 2008 study published in the American Journal of Human Genetics, 19.8% of the modern Iberian population has Sephardic Jewish ancestry, indicating that the number of conversos may have been much higher than originally thought.". Is that enough to answer the question?
Answer: no