https://www.cnet.com/news/game-of-thrones-battle-of-winterfell-most-tweeted-episode-in-tv-history/

The episode called "The Long Night" included a dramatic 67-minute battle scene in which beloved Westeros heroes battled the White Walkers, with very bloody results. 

The battle resonated with Game of Thrones fans so strongly they posted 7.8 million tweets about the episode.