Thank you for that link, GingerIvy:
Their tweets echo feminist icon Gloria Steinem who said during a speech at last Saturday’s Women’s March: "If you force Muslims to register, we will all register as Muslims."
IIRC, many Dutch people did similar during the Nazi occupation. Interestingly, despite this heroism, the proportion of Jewish people rounded up was higher in the Netherlands than in France because Dutch paperwork was more complete.
The Dutch censuses had been very thorough, and the Nazis used these and other "normal" documentation to identify Jewish people.
In France, the staff at the population bureau didn't make an overt gesture of resistance but just quietly failed to record who was Jewish - they literally didn't punch the column on the IBM punch cards.