> If a kid wants to hurt bullies with the intention that it will make other bullies afraid and so reduce the overall amount of bullying in schools then that would fit the definition.
You have no evidence that most school shooters communicated such a goal (although there might be an outlier). Or if you do, I'm curious what it is.
Terrorists have a tangible goal, typically coupled with demands, not some hidden intention you make up to shoehorn a person into the definition. Even Elliot Rodger, who had a "manifesto", did not communicate any sort of demands or goals.
You have no evidence that most school shooters communicated such a goal (although there might be an outlier). Or if you do, I'm curious what it is.
Terrorists have a tangible goal, typically coupled with demands, not some hidden intention you make up to shoehorn a person into the definition. Even Elliot Rodger, who had a "manifesto", did not communicate any sort of demands or goals.