I often wonder why spree killers kill so few people...
I could leave my house here and kill almost all of my neighbours and be home in time for supper.
Exactly. People go to crowded places like malls, churches, schools, etc... and only have single digit body counts. If you can't hit double digits by shooting up a mall then you really do have problems. Shit, I would go in and start blasting right away. Apple store. No escape. Then run to the other end of the mall and 'hide' with the survivors. Once that security gate goes down or the door is locked.... bang bang.
But no, fuckheads go in one end, fire wildly, plant themselves somewhere in the area and wait for the cops to come so they can kill themselves.