Initiation into Crime

I saw something yesterday that really saddened me. I was at the local veggies store and 3 kids walked in, 2 of them all sure about the world and 1 all shifty eyed and worried.
While one of them was paying for tomatoes while the other kid swiped a carrot and started chomping away on it. The younger kid, now, trying to be all cool put his hand in the basket and fumbled to take out a carrot.
And to his horror, he turned and saw me looking at him. That look on his face. The fright. The shame.
I hated looking at it.
And I couldn't / didn't do a thing.

I dont know if this was his initiation into some sorry crime-filled life.And I still don't know what to do.