LOS ANGELES — The "Harry Potter" team did not need a divination expert to know its cast would encounter some "unpleasant and aggressive behavior."

HBO boss Casey Bloys told multiple outlets this week that the network had taken precautions anticipating the vitriol the "Harry Potter and the Philosopher's Stone" actors would face. Ghanian English actor Paapa Essiedu recently spoke out about the racist abuse and death threats he has received since the announcement that he had been cast as potions professor Severus Snape.

"With all actors on any kind of big IP shows — and this is obviously one of those where you've got, you know, passionate fans, people with a lot of opinions — it can get scary in places," Bloys told Variety in an interview published Tuesday. "So for any show like that, we anticipated it and tried to have training, you know, best practices in terms of social media and how to handle it. And obviously we've got a serious security team."

Essiedu, who is portraying the enigmatic but ultimately heroic Hogwarts professor first brought to life by Alan Rickman in the original "Harry Potter" films, has opened up about the racist abuse he has received from those who believe a Black man should not be playing the fictional wizard.

"I've been told, 'Quit or I'll murder you,'" he said in an interview with the Times of London. "The reality is that if I look at Instagram, I will see somebody saying, 'I'm going to come to your house and kill you.'"

"[N]obody should have to encounter this for doing their job ... And I'd be lying if I said it doesn't affect me emotionally," Essiedu added.

This is not the first time that fans of J.K. Rowling's Wizarding World novels expressed outrage over the casting of a Black actor in an adaptation. There was a similar outcry in 2016 when Noma Dumezweni was cast to play Hermione Granger in the original London production of "Harry Potter and the Cursed Child."

It's also not a situation unique to "Harry Potter." Racist vitriol has been hurled toward actors in other genre franchises, including fantasy shows such as "House of the Dragon" and "The Lord of the Rings: The Rings of Power," as well as those involved in "Star Wars" and the Marvel Cinematic Universe.

Bloys also told Deadline in an interview published Wednesday that they had "anticipated there would be a lot of interest in all of [the actors], and interest can tip over into more unpleasant and aggressive behavior."

"We talked to them about what to expect, what to expect on social media and how we handle it, but any kind of security that's needed is an unfortunate aspect of doing IP shows," he said. "We just try to be mindful and monitor it."

Essiedu also told the Times of London that "the [racist] abuse fuels" him.

"[It] makes me more passionate about making this character my own, because I think of how I felt as a kid," he said. "I would imagine myself at Hogwarts on broomsticks, and the idea that a kid like me can see themselves represented in that world? That's motivation to not be intimidated by someone saying they'd rather I died instead of doing work I'm going to be really proud of."

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