Who is popular today?

Twitter released its top-trending topics and tweets of 2019 with “Game of Thrones,” “Avengers: Endgame” and actor Tom Holland commanding the most tweets in the TV, movies, and actors categories. BTS holds both the No. 1 spot in the most-tweeted-about musicians category and the second-most-retweeted tweet worldwide. Since its release in June, a video of...