I was rolling between the aisles, carefully looking at the products. The basket on my lap was already half full. Turning into another aisle, I accidentally bumped the wheel of my wheelchair against a man’s foot who was standing with his back to me.

“Sorry,” I said immediately, stopping. “I really didn’t see you.”

It seemed like a normal situation: you bump into someone, apologize, and move on. But not this time. The man spun around sharply and literally exploded with anger.