This is a short video made using found-footage based around the Heaven's Gate Cult ("UFO Cult"). The recording of Marshal Applewhite speaking to everyone is his last tape, right before he and his followers committed mass suicide. The images of the people smiling up at the camera are the "students" of this cult right before they "evacuated" or "ascended" from Earth.
The sound is super soft, so you might want to turn your speakers up (sorry, I'll edit it soon).
((This film was made for educational purposes and is not intended for any use besides such. All credit for the song Twilight Coda (by Steven Wilson) and footage (ABC and Archive.org) belongs to the owners.))