Suspects in attacks on two mosques in Christchurch, New Zealand, and a synagogue in Poway, California, also are believed to have posted hateful manifestos on the site. This isn’t the first time 8chan has been tied to a mass shooter this year. It was uploaded fewer than 20 minutes before the shooting, according to CNN. The text contains racist rhetoric, blaming immigrants and Latinos for taking away jobs from Americans. Law enforcement officials are investigating a document posted there that is believed to be authored by the suspect, 21-year-old Patrick Crusius. ( JTA) - Not long after news that a shooting at a Walmart in El Paso, Texas, left at least 22 people dead, reports started swirling that the suspect had posted a manifesto on 8chan, an online forum.