In my experiences, the expression of how I should be so grateful to be living here rather than over there is because over there is a giant cesspool of filthy garbage while Canada is nothing but pristine goodness. Or that I should feel grateful and privileged just be able to be in their regal presence. Something like that isn't exactly the worst thing in the world but it has become amazingly annoying, especially when it happens almost daily.
What I was referring to was people who have escaped situations of conflict and danger, and/or extreme poverty, and/or refugee camps - hence the reference to Syrian refugees who have expressed gratitude about being here. I don't think any such situations are viewed as "a giant cesspool of filthy garbage".
There was a refugee from Kenya who crossed into Canada (Manitoba crossing) from the US in January (quite a few came from the US because they thought Trump would deport them) and lost his fingers making the crossing. In an interview, he indicated that in his view, his fingers were a price worth paying to get here.
So, we are really not talking about the same thing at all.
I understand that you are angry, and what you says indicates that you feel you have been demeaned. But honestly, I have never thought that being Canadian meant I had a "regal presence". To me that's just

- and I think most Canadian-born people, at least the ones I know, would feel the same.
I will say though that I consider myself very fortunate to have been born Canadian.
I was born and raised in Canada and English is the only language I happen to speak. So yes, I do find being told how good my English is to be fairly insulting. Something else I also happen to find insulting is constantly being stared at (it's even worse when they stare while pointing and whispering).
I don't know where you live, but I certainly don't think that because someone is of color or a visible minority, that they were not born in Canada or don't speak English. I would think that is true of most people in large, urban centers, who will be acquainted with /friends with/neighbors with/work with people of color/visible minorities - some of whom were born here.
As I've indicated, I've observed a lot of racism against First Nations - other non majority groups, not so much. This is not to say that it does not exist and this is just in my city. I expect I'd encounter it much more in predominantly white, rural, less multi-cultural rural areas.
Also, in my view, most of us are racist to a certain extent, even if we don't express it. It's important to examine and recognize that.
Incidents like the above are like paper cuts but when they happen again and again and again, you sometimes feel like you've slowly bled to death. Overtly violent incidents though feel like you're being bludgeoned.
Again, sorry to hear about that.
I don't know where you live, and won't press you to share it.