Updated: October 8, 2015 2:37 AM ET | Originally published: October 7, 2015 10:51 PM EDT

The Twitterverse expressed indignation against Rupert Murdoch on Wednesday night, after the media magnate tweeted his approval of 2016 Republican Party presidential candidate Ben Carson.

The source of the outrage wasn’t Murdoch’s endorsement of Carson (and Carson’s wife Candy), but rather his choice of words that appeared to be making oblique reference to the ethnicity of President Barack Obama.

Murdoch has not yet responded to the backlash against his controversial tweet, or provided a reason for his apparent suggestion that President Obama is not a “real black President.”

Many Twitter users criticized the tycoon, who has made similarly controversial statements in the past.

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Write to Rishi Iyengar at rishi.iyengar@timeasia.com.

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