The plot cleanly maps to the European “Jewish Question”, except dragons are the Jews in this story. The Hidden World is Israel, a place to put all the dragons because the Vikings are too antisemitic antidraconic to coexist peacefully; and gosh darn it, it’s too hard to change their minds. EVEN THOUGH a central theme in movies 1 and 2 is the opposite: that the people of Berk can change their minds about dragons, and that people generally can overcome bigotry. All of that goes out the window with the third movie.