Did that book say anything about how Jews got into banking? My understanding is that they got into loaning money because they were forbiden from entering other professions to earn a living.
The witnesses always made a big deal about how many witnesses died in the Nazi camps (and that is awful) but I believe more Catholic priest died at the hands of the Nazis that JWs. I think I read that in Barbara Grizzuti Harisons book on the Watchtower.
As a JW I always sensed the underlying hatred of Jews in the Watchtower. Maybe it went back to Rutherford whos antisemitic statements are on record or maybe it was because they felt they replaced the Jews as Gods chosen people and didn't like the idea of the Jews trying weasel their way back into favor with God putting them back out on the street.
I've never understood why people hate Jews. Some of my best friends have been Jews. Some of the kindest people I've met have been Jews. Some of the funinest people on the planet are Jews. I just don't get why some people are that stupid and mean to as hate and entire group of people whether it is for ethnicity, skin color or some other dumb reason.