A day after an assailant killed two children and wounded 18 other children and adults at a Catholic church in Minnesota, the FBI said the attack was motivated by "hate-filled ideology." But online materials presumed to belong to the shooter paint a more complex picture, say several extremism analysts.

Instead, they say the emerging profile appears to align with a growing trend of school shootings committed by young people who harbor a misanthropic view of the world, who revere perpetrators of mass violence and who seek notoriety within communities that share that obsession.

"There does not seem to be a coherent ideological motive behind this attack," said Amy Cooter, deputy director at the Institute for Countering Digital Extremism. "It really seems to be much more about the violen

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