The Pogrom of 1920:  The Moslem festival of Nebi Mussa, coinciding with Easter and Passover, provided a spark to ignite pent-up passions. 

Thousands of Arab pilgrims started converging on Jerusalem on April 4, 1920; the crowd, inflamed by anti-Jewish diatribes, began attacking Jewish passers-by and looting Jewish stores. 

Soon, Jewish blood was shed and the mob rushed into the Jewish quarter to kill and to pillage.