The public visibility of a person does not determine the character of his or her actions. Everyone is expected to contribute to the betterment of the community. To achieve their potential as citizens, all must act to assist others.
Heroes are people who perform extraordinary service in ordinary ways for selfless purposes.
Service to others is the springboard to heroic deeds. People can volunteer their time in addition to performing their daily duties in their regular occupations. Athletes can volunteer their time in addition to exercising their physical pursuits in their demanding sports. Publicity and notoriety are not essential ingredients to the performance of heroic service. The extra effort to help others is the primary requisite.