You shouldn't call someone the wrong name.
James, who comes from a very conservative family, has a class with a transgender student who changed their name from Joe to Joanna.
James wants to share his conservative political views.
James uses Joanna's name while talking about his beliefs about the importance of a traditional family .
James insists all calling Joanna by her old name, which clearly bothers her.
Joanna tells James that he's wrong, but appreciates that he uses the correct name.
James' classmates start ostracizing him because they sympathize with Joanna.