changing lanes

Even though I know how to change my own tire, it's incidents like this that make me glad to be a member of AAA -- Two shot this morning on I-10 while changing a tire.

I mean, I even think twice about giving the finger to drivers in my maddening road rage ever since a friend of mine was followed home, but this article makes it sound like the shooter was on foot. Wow. What is a person to do?