A piñata shaped like a white woman was strung up to a tree at the University of Memphis, then African-American students took turns beating it with a stick. Where is Al Sharpton when you need him? Isn’t this a shocking case of racism? No, actually it isn’t. Turns out the students involved were mere grade school kids, brought on campus for a special “Luau” party sponsored by the university. The piñata was supposed to represent a hula dancer. “We want to assure our community that no racial or gender animosity was intended,” said a university spokesperson. At worst, this...