As a result of NAFTA, the creation of the hardware and software for the Canadian census is contracted out to the Canadian subsidiary of the US armament corporation Lockheed Martin.
As a result of the USA Patriot Act and the USA Homeland Security Act, all US companies and their subsidiaries wherever they are located are required on demand (on pain of heavy penalty for refusal), to release to the US Homeland Security all data held. No foreign law (i.e., Canadian) overrides the application of the USA statutes in the USA. Further, the US Patriot Act forbids any company from even telling you that your most private information has been compromised.
Even if you fill out the form properly and mail it in, the scanning software has also been developed by Lougheed Martin.
Therefore, we do not recommend that you ignore the census, only that you do NOT do it online, or when you fill in the form, you write in answers instead of checking the little boxes, and make notations on the form. This will prevent it from being scanned and a real person, a Canadian, will access the information about you.
Lougheed Martin is a huge weapons manufacturer and technology company in America that works for the US Department of Defense, and others, with many divisions including Intelligence, surveillance and reconaisance. Systems integration is one of their strong suits. Their motto is - We never forget who we're working for.
You can be sure it isn't Canadians.