&gt; How data was collected<p>Previously collected census data of Amsterdam.<p>&gt; The original purpose of collection<p>&gt; The benign intentions of the original collectors<p>The usual reasons any state pays to count their citizens. This particular census data included the <i>religious affiliation</i>.<p>&gt; How the data moved from the collecting administration to the abusive administration<p>In 1941, when the Nazis occupied Amsterdam, they commissioned the local civil servants this map of a particular subset of their census data:<p><a href="https:&#x2F;&#x2F;www.verzetsmuseum.org&#x2F;uploads&#x2F;archive&#x2F;museum&#x2F;topstukken&#x2F;stippenkaart_1633.jpg" rel="nofollow">https:&#x2F;&#x2F;www.verzetsmuseum.org&#x2F;uploads&#x2F;archive&#x2F;museum&#x2F;topstuk...</a><p>Each black dot represents 10 Jews. 3&#x2F;4 of those dots were efficiently rounded up and eventually murdered in the camps.