"Aside from rabid Islamists, no one who wishes to be taken seriously can publicly say anything bad about the old Jews of Europe without sounding like reactionary troglodytes"

The quote by Jack Schwartz reflects on the sensitive nature of talking about historical European Jews, particularly in the context of contemporary discourse. Schwartz appears to be resolving the complex historical and cultural traditions surrounding European Jews, specifically during and after the Holocaust. The expression "old Jews of Europe" most likely refers to the Jewish communities that existed in Europe before the prevalent devastation they faced throughout World War II.

The recommendation to "wild Islamists" recommends a group that, according to Schwartz, may vociferously criticize Jews in a manner that is considered extreme, despiteful, or not in line with mainstream or respectfully vital discourse. This highlights the presence of particular radical viewpoints that are frequently dismissed in wider conversations when attending to the history and contributions of Jewish neighborhoods.

Schwartz indicates that, for more affordable and highly regarded individuals or groups, openly speaking negatively about these Jewish communities can lead to being labeled as "reactionary troglodytes". The term "reactionary" represents somebody who holds extremely traditional views and tends to withstand or oppose progress or reform. "Troglodytes", traditionally describing prehistoric caveman, has actually progressed into a pejorative term for individuals thought about old-fashioned or oblivious. For this reason, Schwartz is suggesting that unfavorable commentary on European Jews is most likely to be viewed as regressive or ignorant, instead of a valid criticism.

This quote underscores the cautious navigation needed in talking about Jewish history, particularly relating to sensitive subjects like anti-Semitism, historical persecution, and cultural contributions. It points to a wider societal understanding that criticisms need to be grounded in a well-informed and considerate context to prevent perpetuating stereotypes or hidden bias. Overall, Schwartz is highlighting the value of approaching such discussions with nuance and level of sensitivity to avoid being dismissed as outdated or intolerant in public discourse.