> ~0 in 2021

Sure. This is a nice indication you're doing a little sleight of hand.

https://en.wikipedia.org/wiki/2021_San_Jose_shooting

https://en.wikipedia.org/wiki/2021_Boulder_shooting

https://en.wikipedia.org/wiki/Indianapolis_FedEx_shooting

https://en.wikipedia.org/wiki/2021_Atlanta_spa_shootings

https://en.wikipedia.org/wiki/2021_Rock_Hill_shooting

https://en.wikipedia.org/wiki/2021_Muskogee_shooting

https://en.wikipedia.org/wiki/2021_Chicago%E2%80%93Evanston_...

I'm sure you knew all their perpetrators' names by heart, right?

https://www.congress.gov/crs-product/R48276

> Active shooter incidents that meet the federal standard for mass killings have at least three fatalities in a single incident, not including the shooter. If the police are notified of the incident after it has concluded or the event occurs in a sparsely populated public place, then it is not considered by the FBI to be an active shooter incident.

> Incidents resulting from self-defense, gang violence, drug violence, domestic or residential disputes, hostage situations, or crossfire as a byproduct of another ongoing criminal act, as well as acts that do not put other people in peril, are also not considered active shooter incidents.

The Kirk shooting, therefore, was not an "active shooter" by this definition, either. I suspect that definition would be a surprise to the folks there.