The Harry Potter series author J.K. Rowling has responded sharply to Murdoch's tweet that while "Maybe most Moslems peaceful," all were responsible for "growing jihadist cancer" until they worked to destroy it.

Murdoch's tweet on Friday came two days after the deadly terrorist attack in Paris at the satirical newspaper Charlie Hebdo. The media mogul also tweeted: "Political correctness makes for denial and hypocrisy."

Rowling sent a handful of tweets Sunday attacking Murdoch. She wrote that since she and Murdoch were both Christians, she felt responsible for him and would "auto-excommunicate." She mockingly accepted the blame for the Spanish Inquisition and for any violence by Christian fundamentalists.

"Oh, and Jim Bakker," she added, referring to the American televangelist who was jailed for fraud.