They were also subjected to attacks by the Shepherds ' Crusades of 1251 and 1320 .
In the Second Crusade ( 1147 ) the Jews in France were subject to frequent massacres .
Jews were also subjected to attacks by the Shepherds ' Crusades of 1251 and 1320 .
In the Second Crusade ( 1147 ) the Jews in France were subject to frequent massacres .