As is well known Steven Runciman, a British historian known for his work on the Middle Ages, definitively clarified what the Holy War had been: "The Holy War itself was nothing more than a long act of intolerance in the name of God, which is the sin against the Holy Ghost".
However I'm not interested in generic discussions or debates on this matter, but I want only to know precise notices about the massacre of Jews in England during 1190-1200.
[...] during the recruitment for the third crusade in England in 1190 were attack on the Jews especially vulnerable with the king's campaign for funds, his approaching departure and immediate financial requirements of the crusader who converged in English town ports and main roads in the early months of the year. In Lent 1190, bands of English crusaders, some motivated by a misguided notion of serving God and the cross, began looting Jewish property in commercial centers such as King's Lynn and Stamford. The violence reached a ghastly climax at York in mid march Well-connected local crusaders led a concerted attack on the Jewish community that culminated in a mass suicide and massacre at the royal castle, now Clifford's Tower, after which, revealingly, the bloodstained crusaders went to York Minster to destroy the Jews' bond of credit stored there.
Questions are: How many Jews died during these persecutions? In England, was the Jewish population drastically reduced when these persecution ended?