"Harry Potter" alum Jason Isaacs weighed in on the online controversy surrounding Paapa Essiedu's casting in the upcoming HBO series adaptation.

Jason Isaacs called out "racist" fans criticizing the casting of Paapa Essiedu as Severus Snape in the upcoming 'Harry Potter' series.

If there’s one thing we know about Jason Isaacs, it’s that he’s not going to bite his tongue. The outspoken actor has come to the defense of Paapa Essiedu, who was cast as Severus Snape in the upcoming Harry Potter television series adaptation.