Marcus, a 35-year-old African American attorney, works in a wealthy, predominantly white part of town. On his way home from work one evening, he stops at an upscale organic grocery store to pick up a few items. As soon as Marcus walks in, he notices an older white woman glancing at him, clutching her purse a little tighter. A store employee subtly follows him down the aisle, pretending to organize shelves but clearly keeping an eye on him. Marcus gets the message that he "doesn't belong" there. Which concept best represents this example?单项选择题
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