Some researchers say these recent attacks are examples of "nonideological" terrorism — the result of several antisocial, decentralized, online networks coming together.

Shortly after 11 a.m. on Jan. 22, 17-year-old Solomon Henderson entered the cafeteria ... A day after the shooting, the Metro Nashville Police Department said it had determined that the gun ...

The following month, 17-year-old Solomon Henderson killed himself and another student at Antioch High School in Nashville. Both appear to have been heavily influenced by mass killers of the past ...

Jill Lemond of Evolv Technology listens after answering a question during a Metro Nashville Public Schools ... their heavily artilleried attack. Solomon Henderson was a student at Antioch.

The Metro Nashville Public School board unanimously ... immediately launched into their heavily artilleried attack. Solomon Henderson was a student at Antioch. He walked through the front door ...

17-year-old student Solomon Henderson opened fire with a pistol ... In addition to providing support for those facilities local to Nashville, he made a point of stopping at jails, rehabs and ...

Metro Nashville Public Schools shared photos ... The gunman, whom MNPD identified as Solomon Henderson, then turned his weapon on himself.

The other shooting was at Antioch High School in Nashville last month. Solomon Henderson killed another student and himself. Now, some analysts who focus on extremism and terrorism have been ...