Decades ago, an inspector for my project was mugged while Christmas shopping at the local mall. He was best described as a stocky, strong young man. He'd played football in high school, and was far from a weakling. Still he was mugged. He had an arm full of packages, they hit him after hiding behind some cars and were gone before he had a chance to fight. He never recovered his gifts, and the police couldn't really do much.
You have to be wary. Park where there are people, with plenty of light, and if you're alone, never forget to observe the parking lot before you go to your vehicle. If you have that feeling something isn't right, find a security guard, or a policeman, and have them escort your. If that's not available, wait until there are more shoppers going the same way, and carefully examine around your vehicle before you walk up to unlock the door. Never fill your arms with packages, unless you have someone with you that you know can help.
I despise that fact there are those willing to steal like a coyote attacking a small dog. They're the scourge of the earth, and in my opinion, if caught, should be sentenced to 20 years of hard labor. If convicted twice, they should be punished like a wild coyote that lost it's fear of men.