I disagree. The convenience stores and shopping malls are just the beginning. Office buildings, pharmacies, homes (especially the "mansion" type homes), hijacking pricey vehicles on the highway are some possibilities. I think thefts by masses of the "orcs and zombies" will start to occur more frequently when these mobs realize how easy it is to get away with it.
How many people have been prosecuted for the mob attacks that are seen so frequently on YouTube? These savages are counting on the "Race Card" to protect them from being shot. And they have plenty of reasons to think it will work.
I volunteer at our small local hospital. Used to be, the pharmacy window in the hospital was open from 10:00 a.m.-4:00 p.m. A few months ago, they started locking it during the day - you have to ring a bell, and wait for a pharmacy attendant. There isn't even a clear window, so you can't see in. This is a small town on the Oregon Coast - not many minorities, but a lot of white, meth-head trash.
In the later stages, yes. Pharmacies will be targeted along with other stores in the early stages. Carjackings will increase (along with shooting of carjackers). More of the pricy cars have OnStar-type theft prevention where the engine can be turned off remotely. Just as increasingly-good car alarms led to carjackings, these new anti-theft devices may result in more carjackers kidnapping or killing their victims so they can't report the theft until the car is in the chop-shop. You will also see more truck hijackings.
I'm not sure about offices -- what do they have that can be sold for good money on the street, besides computers?
Warehouses and distributor locations, on the other hand, would have lots of loot, and would be vulnerable to heavily-armed goblin gangs.
Eventually, though, people will get sufficiently fed up to exterminate the underclass in its entirety.