I crouched down, out of sight, my fingers white on the shelf as the man rampaged through the store screaming at the top of his lungs.
I knew grief.
I knew being upset.
But this.
This was crazy.
I flinched as a crash echoed through the store, the sound of shattering glass tinkling in my ears. 
Hopefully the police would come soon. 

-Inspiration from an upset customer in the store. -Nothing was broken.