From the team that brought you “Why is Snow White Latina?,” “Why are there Black people in ‘The Rings of Power?,’” and “Star Wars has gone woke,” comes the latest online onslaught against an anticipated Hollywood project that committed the unfathomable sin of having a diverse cast. In recent days, Twitter trolls have formed a phalanx and pointed their sarissas squarely at “The Odyssey,” Christopher Nolan’s $250 million adaptation of Homer’s epic scheduled to hit cinemas July 17. They have not actually seen the film yet, mind you, but have nevertheless managed to work themselves into a lather over a...