Yes, at least he did seem to have a power-complex regarding moral superiority over handicap spots.
First thread about this
http://www.freerepublic.com/focus/f-news/3672750/posts
Somewhere in there a poster found an article about his own history, including IIRC threatening or brandishing the gun. Guy might be a bit too high-&-mighty, and thus might be a bit trigger-happy.
And the store owner said he made a habit out of it.
The guy was hanging around in the parking harassing people.
Not much different than your neighbor's obnoxious territorial dog getting hold of a gun and being able to use it.
All the people on this thread sticking up for the shooter need to think long and hard about what they're advocating for.
This is a typical FR thread - people shooting their mouths off [pardon the pun] with half the facts, or less.