Municipal services, social services, and researchers rely on census data. When a case for funding needs to be made, the proof is in the data. Without access to demographic information, there’ll never be an argument for needed funds by community service agencies.
With this in mind, I am posting a link to an online petition. I am not usually in favour of online petitions, but this time it’s worth the effort.
Keep the Canadian Census Long Form
Cartoon from "Punch", nineteenth century.