The debate follows some fans' decision to boycott the HBO series due to Rowling's controversial stance on transgender issues, which also led Nick Frost, set to star as Hagrid, Keeper of Keys, to restrict comments on his Instagram post announcing his involvement after facing criticism.

Jason Isaacs called out the "racist" Harry Potter fans who have gone out of their way to be "rude" to Severus Snape actor Paapa Essiedu.

HBO's 'Harry Potter' TV show recasts all of the Hogwarts characters with new actors. See who's who in this cast guide.

School is back in session at Hogwarts as production begins on the new 'Harry Potter' series. HBO shares first looks at two key characters.