Media mogul Rupert Murdoch has come under scrutiny for tweeting that Muslims must be held responsible for last week's terror attacks in France.

Murdoch took to his Twitter to say that those who practice Islam “must be held responsible” until “they recognise and destroy their growing jihadist cancer.”

Many responded to Murdoch’s words with criticism, saying it’s unfair to blame an entire population for the actions of a handful. One such person who took notice of his words was J.k Rowling, author of the Harry Potter series.

"I was born Christian. If that makes Rupert Murdoch my responsibility, I'll auto-excommunicate," she said on Twitter.

She sarcastically went on to taking the blame for the Spanish Inquisition, “all Christian fundamentalist violence,” and even reproached televangelist Jim Bakker