There are a lot of valid purposes, especially in today's world. A video is the only non-contestable witness to an accident. It has also been the proof to defend against unwarranted charges claimed by a cop who is less than honest and ethical. Heck, there was just a cop charged with a variety of crimes due to the false report he filed claimed a defendant lunged at him and interfered with the cop interrogating another person (who was also subject to an unlawful search) but in reality what happened is the defendant was not intereference in any way but the cop was the aggressor and was apparently bothered by the defendants use of his phone (not certain but I believe the guy was intending on video recording the cops searching the other party).
While it wasn't a dashcam, it is irrelevant. Cameras saved a couple people from going to jail and hopefully will get a bad cop off the streets.
Not meaning to beat up on cops. That was just a recent situation that was a good example. I have seen many videos using dash cams that were the only reason the at fault party was held responsible.


