Twitter Inc on Sunday used its new "manipulated media" label for the first time on a video clip of U.S. Democratic presidential candidate Joe Biden that was retweeted by U.S. President Donald Trump.

The former U.S. vice-president uses the widely-shared video to criticize Trump and his ability to lead alongside international counterparts.

“It seems that we have a greater quantity of apologies but of lower quality,” says Nick Smith, author of, I Was Wrong: The Meanings of Apologies.