These attacks include the burning of Israeli flags worldwide. Mezuzahs (a parchment inscribed with religious texts and attached in a case to the doorpost of a Jewish house as a sign of faith) are being ripped from homes. Jewish shops around the world are torched. And the delegitimization of Israel by pro-Arab sympathizers all serve to undermine the security of hundreds of thousands of Jews around the world.
But European Jews are living by their pledge to "never again" allow a Holocaust like the one instigated by Nazi Germany. Throughout Europe, Jewish groups are hiring former, elite Israeli soldiers as security guards for Jewish institutions and synagogues.
Stephen Brown, writing for David Horowitz's Freedom Center and Front Page Mag, says "Well aware of history, German Jewish associations know the first major step in any planned liquidation of Europe’s Jewish communities, especially of their own, is the destruction of their synagogues. This is what occurred in Germany in November, 1938, and later came to be called ‘Kristallnacht’ (Crystal Night). In one night, Nazi thugs destroyed all the synagogues in Germany and Austria as well as many Jewish businesses, homes, cemeteries and social meeting places. The ‘Kristall’ refers to the debris of broken window glass lying on the ground afterwards from destroyed synagogues and Jewish stores."
That night over 100 Jews were killed in the ensuing violence. The Nazi regime held the Jewish community responsible for the physical damage and subsequently imposed a collective fine of $400 million (in 1938 rates); this according to the U.S. Holocaust Memorial Museum.
History.com further relates that "more than 30,000 Jewish men were arrested and sent to the Dachau, Buchenwald and Sachsenhausen concentration camps in Germany–camps that were specifically constructed to hold Jews, political prisoners and other perceived enemies of the Nazi state."
Today, European Jews recognize that Kristallnacht was the night that the harassment of Jews in Germany turned to violence, and that it directly led to the extermination of over 6,000,000 European Jews. Kristallnacht was a turning point, and they are determined that such evil will happen "never again".