Well the coke can incident I would of probably done the same thing, well I would of probably pulled the guy threw the window of his car to beat the crap out of him.
As for the Wal-Mart, that sounds like you have some issues to deal with. Try getting away for a weekend, remember people only work in a store, they don't always have the choice of what merchandise they sell and such.
Maybe you just need some action.
-Sam.