It's not for school shooters, but it is industrial scale emotional abuse and psychological conditioning which ends up promoting school shooters by developing a school shooter mentality. That's why I call them "civilizational school shooters". Leftist ideology basically mimics the resentment mongering, narcissistic, pathological nihilism that most school shooters have. Occasionally, this inevitably generates school shooters, but it isn't the primary objective. The primary objective is to create a dependent population with specific psychological triggers that can be mobilized as a political weapon. The inevitable result is some number of terrorist attacks. The Left would normally call this "stochastic terrorism". That doesn't exist, because the people pushing these narratives are fully aware that their psychological conditioning is going to cause this mentality, because it's the same mentality they have, and they are okay with the fact that some people will go on a killing spree.

A subtle distinction, but an important one.