Historically, when talking about the persecution of the Jewish people we have to go back to hundreds of years ago, as they were chased in crusades and wars, as they were harassed, for example, in the First Crusade (1096).
In spite of the existance of anti-Semitism before the Nazi period, if we are talking about modern fascist orders, the anti-Semitism politics by Hitler and the Nazi German Party can be considered the most important modern oppression system for Jewish people.
The word would be extrinsic. Extrinsic means "<span>not part of the essential nature of someone or something; coming or operating from outside."</span>
