Believe me, unless that girl left someone in the store bleeding, Safeway is going to have a nice lawsuit on their hands. It doesn't matter what backgrounds either of them have, a freakin' roast chicken isn't worth physically harming someone. And I guarantee that security guard violated all sorts of company policy, unless Safeway has much different rules than every other retail store in the US. Instead of losing a few bucks of food, they now get to pay for a hospital visit, a couple of lawyers, and, very likely, damages. This doesn't even take into account the number of witnesses who won't shop there for a long time. And that security person could be facing criminal charges himself, after being suspended and fired. All over what?

Yes, stealing is wrong. Should someone be assaulted because they're suspected of theft? Hell's bells, even the guys on "Jacked" back off a pursuit if it's putting anyone (including the car thief) in danger. What makes a good police officer, is the ability to control a situation with the least amount of force, and knowing when a situation is escalating beyond reasonable limits.