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In the firmament of social media, Donald Trump is a shining star. The digital domain dominates his thinking — social networking sites have reportedly  played a key role in the success of his presidential campaign.

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His Twitter account is highly active; at the beginning of his presidency, he is reported to have tweeted about nine times a day.

According to a report in the British media, in the first six months of 2019, Trump spent more than $11.1m on Facebook and Google ads alone.

US President Donald Trump gestures during an event. File photo

Trump keeps raising the bogey of fake and misleading news, but he has been pulled up for manipulating the media – by none other than Twitter.

An edited video featuring Democratic presidential contender Joe Biden which was retweeted by US President Donald Trump has become the first to be marked "manipulated media" by Twitter.

According to a policy unveiled by Twitter last month, "significantly and deceptively altered or fabricated" media is likely to be labelled "manipulated" if it is found to be deliberately misleading.

White House Director of Social Media Dan Scavino originally tweeted the edited video which Trump later shared.

In the video, Biden appears to have mistakenly endorsed Trump for re-election, although he did not.

Joe Biden attends an election rally. File photo

The edited video used footage from the former Vice President's speech in Kansas City on Saturday.

In the edited version of the video, Biden appears to say: "Excuse me. We can only re-elect Donald Trump."

What he actually said was: "Excuse me. We can only re-elect Donald Trump if in fact we get engaged in this circular firing squad here. It's gotta be a positive campaign."

According to a report in TechCrunch, the manipulated media label began appearing on the video to some users on Sunday evening.

Twitter first announced a draft of its new policy on deepfake and manipulated media in November 2019.

As per the policy officially unveiled last month, Twitter intends to warn users if a media is manipulated, while not removing most of them.