Do NOT automatically believe everything the schoolbook history tells you.
Do not automatically believe history as told by the TV screen and Hollywood. RESEARCH! Find out for yourself. Scratch the surface of the news and you'll find much of it is fake. Scratch the surface of the officially sanctioned history and you'll find those in charge are telling you half the tale if you're lucky and keeping the most instructive bits to themselves.
Thus it is with Jewish history. There's is much more to the 'people of the book' than the crucifixion, dispossessed Palestinians and the 'Holocaust.'
A few more 'Jewish gangsters' are revealed here.