The interesting thing in this bit of San Antonio self defense news is what they don't mention.  Fearless Store Clerk Shoots Out Thief’s Windows:
Police say a robber came into the store and acted as if he had a gun. Once he got cash, he hopped into a waiting pick-up truck. The clerk ran outside and shot at the truck as it drove away.
What isn't mentioned is if there were any consequences for the store clerk.  After the robbery was "finished," he followed the thugs outside and shot at their vehicle as they were fleeing.  And yet, no word on if the clerk got in trouble with "authorities."

Don't get me wrong.  I have no problem with the store clerk shooting at them as they flee.  But in some parts of the country, the clerk would be in serious trouble.  Never mind that that store is his livelihood, never mind that he probably spends most of his day watching so-called "customers" like a hawk to prevent petty thefts, never mind that his store will be tagged if he turns his lights off for more than 5 minutes.  Yes, this is self defense, because that store is how he supports himself and his family and every punk who gets away is a punk who will come back, and a punk who will tell all his fellow punks that the store is an easy mark.

In some places people would already be plastering their panties because he shot at them as they ran away.

Hard luck.  You don't want to get shot, don't rob convenience stores.  In San Antonio, anyway.

Via Civilian Gun Self Defense Blog.