What professional knowledge do people in public relations need?

Specific public relations needs to be mastered:

Communications, management, marketing, political science, sociology, social psychology, principles of public relations, public relations *Relationship practice and cases, advertising principles, advertising planning and strategy, advertising design, CI strategy, corporate culture, leadership science and art, organizational behavior, interpersonal communication and etiquette, public relations writing, eloquence and speech, negotiation Techniques, social investigation methods, computer applications, mass media research, film and television production, photography, communication regulations tutorials, communication ethics, aesthetics, international relations, etc.

Public relations is public relations. It is a social relationship between a social organization and that part of the public that constitutes its living environment and affects its survival and development. It is an organization's work in order to achieve a specific goal. The science of establishing a good relationship between employees inside and outside the organization, and between organizations. According to Edward Bernays, public relations is a management function that establishes policies and procedures to gain public understanding and acceptance. It is a conscious management activity. Establishing a good public relations relationship in an organization requires the planning and implementation of good public relations activities.