It just left a bad taste in my mouth to tell legal non-citizens who hold the same values as us that they should keep it to themselves. [...] I kept thinking about what I'd say to a legal resident of Canada who drove a truck. [...]

When the government is tyrannical you only have three options: comply, resist, or leave. If you're going to choose resistance as a non-citizen, you'd better be assimilated well enough that people are willing to back you up when the government inevitably comes for you.