Not surprisingly, it's a white guy.
If there's one consistent thing about USA mass shootings, politicians getting shot/killed or any other splashy violent event trying to make a statement it's pretty much almost always white guys.
It makes sense it's basically never a woman because they dont do a lot of crime, especially really violent ones.
But when it comes to school shootings or politicians getting involved, it's white male adult, or white male student. And almost always from small towns. I dont think you get too many big shooting events like this in New York City or hugely populated cities, which you'd think would the norm based on population density and lots of crime in metro areas. But it always seems to skew to the outskirts or some rural kind of town with big fields or a shooting in a giant high school.