So..no more free speech?

[Danzig]

their 'knack' as you call it for business....i would call that a bit of a stereotype. for years and years-centuries really, back to the middle ages, they had no venue opened to them for business, with many turning to money- lending as most other trades were illegal for jews. so, along with getting harrassed for their religion, they were attacked for usury, and by those who owed them money-or by those who knew they had money, else how could they lend it?
but what it all boils down to, all these centuries, is their religious beliefs. it's because of their faith that they were confined to ghettoes, banned from most trades, attacked, beaten, killed, charged with witchcraft, killing and eating good little christian children, etc, etc.