If you are capturing a live event such as a march, it is best to capture it with a moving camera. I have recoded several marches in my day from the sidewalk with my camera on a tripod. I have also put my camera on my shoulder and walked in the march capturing what I could up close. Now, I capture marches with a glidecam stabilizer. This allows me to walk freely, be part of the march and capture beautiful imagery without constant shakiness. Some people just hold their camera in their hand and walk with it, which creates this bumpy shake. By using a stabilizer like the glidecam, you really up your production value. My professor once told us that the best way to capture video is to be part of it; not simply point the camera at the action, but to be part of the action. So next time you plan on covering an event such as a march, think about getting yourself or hiring someone who has a stabilizer.
I have been working in television/media for over 16 years. My experience includes news photojournalist, editor, and storyteller. It is my belief that you have a chance to better your skills each time you pick up the camera. I strive to be better than I was yesterday.