{{Non-free use rationale
 |Article           = John Wayne Gacy
 |Description       = Image of Robert Piest, c. 1978. Still image taken from a screen shot of the 1992 Serial Killers documentary upon John Wayne Gacy.
 |Source            = https://www.youtube.com/watch?v=6AkOXE8Z5no
 |Portion           = Slightly cropped.
 |Low_resolution    = Yes
 |Purpose           = One of the few images available of Gacy's victims, which together help the reader appreciate the type of victim Gacy tended to select
 |Replaceability    = Not replaceable.
 |other_information = * The image is being used to depict an event extremely relevant incident upon the sole article this image is intended for usage included within.
* This image is intended for use to depict a unique historical event in the annals of American criminal history
}}