Nowhere near the handicap parking spaces and the front wheels were hooked - so it wasn't going to go careening into someone's car without being hit by a car. This was also one of those small shopping carts with the basket up top and on the bottom (less weight to start it careening around). and yes, I'd be a ton better of a person if I put that shopping cart away.

I have a ton of dings on my car, but they've been from people opening their doors and slamming them into the car. No shopping cart dings.

If someone tells me in a parking lot to put the cart away, sure I'll do it. If he'd honked at me in the parking lot, I'd have put it away. Or in the time it took to follow me, he could have just put the shopping cart away himself if he was that worried about its placement. If there's a precarious shopping cart when I'm in a parking lot that I'm worried about, I will push it to a safe spot without getting annoyed at random people.

But once you follow me home, throw metal things at my house, and add in an implied threat that you will be back later, that's basically inexcusable no matter how much of a pet peeve shopping carts are to someone.