Editing John Wayne Gacy (section)

== Trial and execution ==
On February 6, 1980, Gacy's trial began in Chicago. During the trial, he pleaded not guilty, alleging mental problems. However, his testimony was flatly rejected, since mental studies were carried out, giving negative results, that is, he did not have or suffer from mental problems. . His lawyer argued that John had lapses of temporary insanity at the time of each murder, but before and after, he regained his normalcy to attract and dispose of victims. At one point in the trial, Gacy's defense tried to claim that all 33 murders were accidental deaths as part of erotic asphyxiation, but the Cook County Coroner demonstrated with evidence that these claims were impossible. Furthermore, Gacy had already confessed to the police and was unable to suppress such evidence. John Wayne Gacy was found guilty on March 13 and was sentenced to 21 life sentences and 12 death sentences. 

In the hours leading up to Gacy's execution, a crowd estimated at more than 1,000 gathered outside the correctional center; most of whom were fervently in favor of execution, although several protesters against the death penalty were also present. Some of the supporters of the execution wore t-shirts that alluded to the previous community services of Gacy as a clown and that carried satirical slogans such as "There are no tears for the clown." Protesters against the death penalty present watched a silent candlelight vigil.
[[File:National Museum of Crime and Punishment - John Wayne Gacy's art kit (3776174113).jpg|left|thumb|Gacy's Art Kit]]
On May 10<sup>th</sup>, 1994; Gacy was executed for his crimes and his execution was a major event with protesters from both sides of the argument attending, some displeased with the death-penalty and others gathering to taunt the serial-killer. He never expressed remorse, and his last words were: ''"Kiss my ass! You'll never find the rest!"''.

After his death, Gacy's brain was removed and given to [https://en.wikipedia.org/wiki/Helen_Morrison Dr. Helen Morrison], who was researching psychopaths. No abnormalities were found in his brain.