Of course, you do. Witnesses most of the time don't want to be bothered and by the time the cops arrived there many of the witnesses would have been gone. I've seen it happen plenty of times with car accidents. Witnesses usually never show up to court and or just ignore the incident and walk away. Video recordings have made a huge difference in the way things are carried out now. For example, cops can no longer simply beat the crap out of someone because they know there's someone right there recording them. A lot of victims wouldn't be compensated if there was no footage of the incident.What? If someone attacks you, or damages your property in most cases you don't need video evidence. What I'm saying is, in a crowded store or restaurant with witnesses nobody needs to grab their camera. If you are alone somewhere Ok, that makes sense.