Slenderman crazies.... need we say more?
Sources:
https://en.wikipedia.org/wiki/Slender_Man
https://sites.psu.edu/passionbloggf/2021/03/01/the-case-of-the-slender-man-stabbing/
https://en.wikipedia.org/wiki/Slender_Man_stabbing
https://www.youtube.com/watch?v=FDJk-yXc2FQ
Music/SFX:
https://www.epidemicsound.com/