there's no anger because there isn't anything to attach the crime to, other than gun control
if some black, middle eastern, or asian guy shot the place down it would be another story
instead you have some pampered kid whos mother probably fucked his friends on the side and a father who makes millions as a head in GE
America, a land controlled by whites, never delves into the issue with family values or raising children properly, instead they want to undercut race somehow or something tangible that can be blamed (guns, alcohol, drugs, etc)