Many of them were already in "anger management" programs on top of the SSRIs. The Columbine shooters were outwardly engaged in the "goth" lifestyle. In their private world, they were simmering in music that promotes killing.
Is there some reason you are so quick to give these social misfits a pass? The "troubled kids" often have a significant criminal rap sheet. Frankly, I object to having them wandering free in civilized society.
I'm not sure why you think I'm giving anyone a pass. I'm just not one rushing to blame medicine for this.