I learned about this from the excellent show Joe Pera Talks With You. Season 1, Episode 8: Joe Pera Talks To You About The Rat Wars of Alberta, Canada (1950 - Present Day)
In my case, I learned about the existence of the rat wars of Alberta thanks to "Your friend the rat" in the Ratatouille DVD, back when those were still a thing.
In my case, I learned about the existence of the rat wars of Alberta thanks to "Your friend the rat" in the Ratatouille DVD, back when those were still a thing.