Its not just the customers..its the management too..
Holiday Shopping in Store After Woman's Stabbing Is a New Low | The Stir
Holiday Shopping in Store After Woman's Stabbing Is a New Low | The Stir
other than it happened on Black friday and walmart didn't want to lose any salesI think the police usually make the decision to close the business if their investigation warrants it. Since it was the husband that killed the wife, if it was obvious it may not have been necessary to close the business, just maybe restrict an area of it. In those types of cases the store simply stays out of the way of the police.
Not condoning Black Friday, but this story really has nothing to do with Walmarts B/F troubles.