Harry Potter author J.K. Rowling took to Twitter on Sunday (11 January) to condemn a tweet from Rupert Murdoch, in which he insisted that even peaceful Muslims should be held responsible for terrorist attacks.

Murdoch tweeted on Saturday (10 January) saying: "Maybe most Moslems peaceful, but until they recognize and destroy their growing jihadist cancer they must be held responsible."

In response, Rowling tweeted on Sunday: "I was born Christian. If that makes Rupert Murdoch my responsibility, I'll auto-excommunicate."

Murdoch's initial tweet had already drawn a lot of criticism and he followed it up with another to further fuel the online rage.

Rowling, on the other hand praised "the courage and compassionate actions of Lassana Bathily," the Muslim employee, who helped hide several Jewish customers in the basement chiller room of the kosher supermarket in Vincennes, where gunman held customers hostage.

In a moving spectacle, people of all faiths joined Rowling to defend peaceful Muslims and apologized on Murdoch's behalf.

After Sunday's (11 January) Unity March, Murdoch was in a kinder mood and tweeted: "Extraordinary scenes in Paris today, but do not forget the heroic sacrifice of Ahmed Merabet, Muslim police officer whose funeral was today."