With spindoctoring, publicity seeking stunts and evidence of mal-practice, public relations is easily associated with the development of post-truth society. The elevation of bullshit as political coinage presents a challenge for the rational public debate which the public relations profession at large should have an interest in maintaining. In this introduction, we briefly highlight some of these challenges for public relations. We point to how papers in the special section tie into these challenges, by for instance, helping to understand the construction of truth, how to construct a defense for legitimate public relations and engage with publics, as well as to build a professional practice through developing and measuring communication.