Hey Hey Hey, This Is Library is a viral video in which a man quiets a group of protesters in a library by saying "hey hey hey, this is library."
On January 21st, 2017, a video was uploaded to YouTube showing a group of student protesters at the University of Washington chanting "Who has the power? We've got the power" are interrupted by a man saying "Hey hey hey, this is library.". The original video has since been removed but was subsequently reuploaded (shown below).
That day, the original video was submitted to /r/videos, where it gathered upwards of 69,000 votes (87% upvoted) and 5,500 comments. Meanwhile, YouTuber Serdar Sed uploaded a Thug Life remix of the video (shown below, left). Also on January 21st, 2017, YouTuber Trimox Chris uploaded an "I Am The One" remix of the video (shown below, right).
On January 23rd, a post titled "Whats this 'Hey hey this is library' meme i have been seeing everywhere?" was submitted to /r/OutOfTheLoop. That day, YouTuber Cool Songs uploaded a trap music remix of the video (shown below).