A New Mexico restaurant generated controversy -- and profits -- this summer with a play on "Black Lives Matter." Now it's coasting on the uproar that began with its sign and has printed hats and T-shirts with the phrase, jumping straight into the seemingly never-ending national conversation on race. Rick Camuglia, owner of Paisano's, an Italian restaurant in Albuquerque, put the phrase "black olives matter" on his sign last month to help sell a new tuna dish with black olive tapenade. It worked like a charm, bringing in more business, with some people adding black olives to every dish they...