I start to imagine the image of a shooting room training, with a target board with drawing, like drawing of a bandit, a terrorist, and the drawing of a woman with babies or drawing of a kid, to train fast response only to right targets.
Now the teacher training would be a target board with the drawing of teen student with a gun.
creep...
Edited ... Social experiment. And the "black" guy on Brazil would be considered white or kind of.
Maybe that's why most shootings in schools and in open place, for no reason, are made by white people.