Nah, they're just too innocent to understand the consequences. When they find a lost human, their humans are pleased and they get treats. Is the human a victim or a criminal? They don't know. When they find drugs will the humans have a party? Or arrest someone? Probably both, maybe they're just bringing that guy to the party.
But they do not rule others with an iron fist. At least not any dog I've wanted to be around would. In that way they're usually about as unlike an authoritarian as you can get.
Edit: the more I think about it, the more "authoritarian" seems to exclusively mean "in favor of using authority over others" which is unrelated to "accepts authority"