Photojournalism is journalism that presents a story primarily through pictures. It is different from art and other photography because it isn't planned. It tells a story and every snapshot should be an action shot as you are trying to tell people what is going on through this single picture, having the caption only to emphasize the situation. Photojournalism is only an art in the way that it is a photo but it serves the purpose of being much more than just an "art". The purpose is of course to get a situation and explain it through a single frame. New photograph are important and memorable because it a picture has more color than a newspaper that is black and white and just has a bunch of words on it. People remember pictures for whatever reason because they are always different. Words are words, the text will only look different if you change the font; but, then again it is still text. Pictures change, and that's what we like!