Target’s offensive Halloween costume is a stumble at a key moment

This isn't the first time Target has found itself facing criticism over diversity issues. Justin Sullivan/Getty Images Target again finds itself in the cultural crosshairs — this time over an offensive Halloween costume. The retailer quickly apologized, but the episode marks a stumble in a turnaround year. The nature of Halloween merchandising can lead retailers to make embarrassing mistakes. Target is again facing a storm of criticism over an unforced error on diversity as it tries to…