re: Wal-Mart security attempts to arrest perp in parking lot-gets stabbed

so you are loading your groceries. Two guys come up that are not Official Law men. Claim you did something and grab you. You yell, hey get off you got the wrong guy. They get rougher and tougher with you. You resist not knowing who they are or what they want. So what do you do? Is this a robbery? Do you CC? Do you fight back? Do you do what it takes to save yourself?