Question: Local 15 of the United Food and Commercial Workers Union went on strike against Gold Medal Bakery when negotiations for a new contract reached an impasse. The bakery's cookies are sold at FoodCo grocery stores in the Syracuse area. The union posts members holding signs saying "Don't Buy Gold Medal Cookies" and "Don't Eat Scab Cookies" in front of the local FoodCo stores. As a result of the union actions, sales of Gold Medal Cookies fall sharply. FoodCo files an unfair labor practice charge against the union with the NLRB. Is the union's conduct legal under the NLRA? Explain.