Photojournalism is a particular form of journalism (the collecting, editing, and presenting of news material for publication or broadcast) that creates images in order to tell a news story. It is now usually understood to refer only to still images, and in some cases to video used in broadcast journalism.
Photojournalists must make decisions instantly and carry photographic equipment, often while exposed to the same risks (war, rioting, etc.) that are faced by text-only journalists. The fact that they rarely have the option to stand back or wait until the dangerous parts of an event are over means they may take even more risks.