Years before Thomas Crooks tried to assassinate a former president at a rally Saturday in Butler, Pennsylvania, he was linked to threats to shoot up his school. That was the disturbing conclusion from a Fox News interview with a former classmate of Crooks at Bethel Park High School. Vincent Taormina told the outlet that the crowd Crooks ran in was suspected of being behind word of a school shooting plan. “A name that kept coming up was ‘Thomas,'” he said. Taormina did not offer details and his story was unconfirmed, but he said the incident occurred his freshman year. Since Crooks was 20 years…