TikTok users and Korean pop music fans are being partly credited for inflating attendance expectations at a less-than-full arena at President Donald Trump’s first political rally in months, held in Tulsa on Saturday.

Social media users on different platforms, including the popular video-sharing app TikTok, have claimed in posts and videos that they registered for free tickets to the rally as a prank, with no intention of going.

Prior to the event, Trump’s campaign manager Brad Parscale said there had been more than one million ticket requests for the event. However, the...