@futurebird René Carmille (https://en.wikipedia.org/wiki/Ren%C3%A9_Carmille) was a French statistician during the German occupation in WW2. When ordered to prepare a list of Jewish people for deportation, he and the people of the department he headed worked as slowly and obstructively as possible, so that the report was delayed by at least two years.
Carmille was finally caught, also because of other Résistance activities, and died in a concentration camp. May he be well remembered.
(“However, the police did not need Carmille's files. They organized raids and deportations from their own manual files.” — Yes, but we never know which effect our actions will have. If they are good, we should do them anyway.)