the greatest wave of anti-Semitism since 1096 engulfed over 300 Jewish communities, especially in Germany, Austria, France and Spain. According to Jewish sources, 6,000 died in Mainz and 2,000 in Strasbourg.114 Charles IV found he had to issue pardons to cities which murdered their Jews: ‘Forgiveness is [granted] for every transgression involving the slaying and destruction of Jews which has been committed without the positive knowledge of the leading citizens, or in their ignorance, or in any other fashion whatever.’ This pardon dates from 1350,