The Ringmaster (mini creepypasta) (WARNING: GRAPHIC)

The killer dresses his victims as clowns and then injects them with a pain-causing, deadly, paralyzing toxin, he then uses them as marionettes as part of a circus show in front of a live audience.  Unable to scream despite their best efforts, the victims can do nothing but watch and listen to the audience laughing at them, as its members are unaware of the horror that is going on as the victims slowly, painfully, and miserably die.