Photojournalism is an part of photography dedicated to taking perfect shots of current events. The basic operation of a photojournalist is to take pictures to accompany a news story. However, truly great photojournalism pictures should tell the story before the text or broadcaster does.
Photojournalism pictures attempt to capture the viewer's attention and emotion to entice him to continue listening to or reading about the story. Think of newspaper covers with large, dramatic shots of the latest current event: these pictures reflect the articles' titles while adding a dynamic edge to story by visually communicating the pathos of the event.
A key aspect of photojournalism is to present accurate pictures that don't compromise the reliability of the actual situation. Consequently, changing pictures with computer software is considered taboo among serious photojournalists and news organizations.