Reuters: News Corp. has been ordered by a Manhattan federal judge to face a class action lawsuit accusing it of monopolizing the market for in-store promotions at some 52,500 retail stores across the United States. Consumer packaged goods companies such as Dial, H.J. Heinz and Smithfield Foods will be allowed to pursue their antitrust claims as a group, potentially boosting overall damages. The litigation is part of a long-running battle over News Corp.’s marketing operations.