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That a mosque was allowed to be built in the first place was the beginning of France's downfall.

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You don't think maybe the Germans might have had a little to do with it?

The mosque was founded in 1926 as a token of gratitude, after World War I, to the Muslim tirailleurs from France's colonial empire, of whom some 100,000 died fighting against Germany.

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During World War II (when France and Paris were occupied by Nazi Germany), the rector Si Kaddour Benghabrit managed the mosque to serve as a secret refuge for Algerian and European Jews. He ensured they were provided shelter, safe passage, and fake Muslim birth certificates to protect them from German persecution. Wikipedia

[PROCON]

Thanks for the historical context.

As you know, many of these mosques are fronts for radical islam recruiting.

This mosque no longer serves it's original purpose.