savages.

⁣⁣Terrorism: ~
The threat or use of violence; a political objective; the desire to change the status quo; the intention to spread fear by committing spectacular public acts; the intentional targeting of civilians.

The Encyclopaedia Britannica. There was an inevitable tendency for them  (the Jewish merchants and  money-lenders,) to specialize in commerce for which their acumen, and ubiquity, gave them special qualifications.  In the dark ages the commerce in western Europe was largely in their hands, in particular, the slave trade. 

Funk and Wagnall Jewish Encyclopaedia They enjoyed full religious liberty...minor offices were open to them.  The trade in slaves constituted the main source of livelihood  for the Roman Jews 

History records that Justinian, although Emperor of the Roman empire, wasn't strong enough to put a stop to their activities. 

With the fall of the Roman empire, Jewish predominance was established. The nations of Europe entered into what historians name  The Dark Ages