I worked on the 2010 Census and it was amazing to see how many paranoid nutjobs refused to answer (requiring us to send a person to their home up to 3 times costing much more than if they would have just filled out the damn form).
Surprised to find some of them hanging out on MMM.
1933 Germany Census - Tracking all the ethic minorities, the single worse case of the census being used against people
1942 U.S. Census - rounding up Japanese, Italian and German Americans - that's someone's grandparents, these are people that had their lives destroyed by filling out a census
"The United States Census Bureau assisted the internment efforts by providing confidential neighborhood information on Japanese Americans" - Wikipedia
Japanese Canadian internment - same thing as the U.S. (not a proud bit of history), lots of countries share guilt
I would hold off calling them nutjobs, its tough to trust governments that use census forms to round up citizens. If my grandparents or parents had stories like that I wouldn't trust the census takers either. Have a little empathy for people, some of those "nutjobs" have some dark family histories. I'm sure the census takers back then were honest and decent people, however these people had their lives ruined by the Census. Some of these same people are alive today, how would you tell them to trust you this time? Your predecessors locked them away...
When I read about Trump and the Muslims or Mexicans I wonder how he's going to track people? It's up to the census takers to build the trust, trust they broke is hard to regain.