Now before the WWII German intelligence built databases of polish elites, scientists, politicians, activists, actors and their families, so when the war started

Now before the WWII German intelligence built databases of polish elites, scientists, politicians, activists, actors and their families, so when the war started they were able to quickly round them up and exterminate. Imagine something like this happens again in the US - enemy gaining access to such database would have everything on a silver platter. Even more plausible motive would be if future government wanted to remove people that they deem enemy to the state (incompatible political beliefs). It would be easy to just deliver them poison disguised as Amazon delivery and have the nation cleansed of the problematic populace. Such database is irresponsible on another level.