Fears over Europe and 'the secondary anti-Semitism'

This week in Poland, the head of Warsaw's Jewish community said Jews there feel shaken, depressed and harassed.

The Austrian house where Adolf Hitler was born Source: AAP

In Hungary, the nationalist Jobbik party has openly vilified Jews, and, in Austria, anti-Semitic offences have more than doubled in the past decade.

So what is the cause, and is there a way to end anti-Semitism?

Analysts from around the world gathered in Vienna recently try to answer that question.