It would be a useful exercise to consider why the old Reformed divines called "Catholics" Romanists or Papists rather than Catholics or even Roman Catholics. Was it just to be mean? Probably sometimes. But it also represents a refusal to concede the ground of who truly represents the historic catholic faith. Protestants are the "Catholic Church (Continuing)" to borrow a Free Church term. There is a reason our confessions call the whole professing church catholic and refer to Romanists and Papists as...Romanists and Papists. Words are important.