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Julio Cesar Jasso, the Teotihuacan shooter, admirer of the Columbine massacre and Hitler

Authorities say the gunman admired Columbine and Hitler, and investigators are examining links to the True Crime Community and possible preplanning.

  • On Monday, April 20, a gunman opened fire at the Teotihuacan archaeological park near Mexico City, killing one Canadian tourist and wounding 13 other foreign visitors before dying at the scene.
  • Authorities identified the shooter as Julio Cesar Jasso Ramirez, 27, a copycat who admired Columbine killers and Adolf Hitler, planning the attack for their shared April 20 anniversary.
  • Among the 13 injured were six U.S. citizens, three Colombians, two Brazilians, a 29-year-old Canadian, and a 32-year-old Russian, with six remaining hospitalized on Tuesday. Criminologist Adam Lankford documented a global rise in mass shootings influenced by U.S. incidents.
  • President Claudia Sheinbaum said the shooter had psychological problems and was influenced by external events, characterizing the incident as unprecedented. Officials vowed to bolster security at archaeological sites with metal detectors.
  • The attack struck as Teotihuacan prepares to welcome World Cup visitors starting in June, while experts note mass shootings are rising globally outside the U.S., with the True Crime Community's origins tracing to post-Columbine internet forums.
Insights by Ground AI

22 Articles

Lean Right

The gunman who shot and killed at least one person and wounded 13 others on Monday at the Teotihuacan archaeological site in Mexico admired the Columbine High School massacre and Nazi dictator Adolf Hitler, Mexican media reported Tuesday. The shooter left behind a framed photo at the scene containing an AI-generated image of himself alongside Columbine shooters Eric Harris and Dylan Klebold, who committed suicide in 1999 after killing 13 people …

·Chile
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Lean Right

Following the attack on Teotihuacan, which resulted in two deaths and 13 injuries according to the latest report, several Mexican media reported on the shooting.

·Paris, France
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Center

The aggressor's intention, which caused the death of a tourist, was to emulate a tragedy such as that of Columbine, the first school attack in the United States. More information: At least 2 dead and 13 injured in a shooting in the tourist complex of the pyramids of Teotihuacán (Mexico)

·Spain
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  • 37% of the sources lean Left, 36% of the sources lean Right
37% Left

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TV Azteca broke the news on Monday, April 20, 2026.
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