I saw a convoy of about 30 cars on the highway back in October. I looked it up and found nothing. Then I see a Reddit post in /r/vexillollogy with the same flag and no useful answers.
It's so weird that people bought like 100 of these flags and there is no info on them at all!
I flipped the picture to make the flag the right way.
Specifically, it's to save their children (who are absolutely all straight and cis-gendered) from any exposure to others; except to ostracize, harm, and eliminate those others.
Here in Alberta, "Take Back Alberta" is a group of fear-mongering hate-based transphobic assholes who organized the "Save The Children" and other protests, and now are pulling the strings in our government. The leader is a contemptible home-schooled evangelical minister.