Originally Posted by
silmarillion
Seems to me that if you catch someone engaged in bad behavior ie: In violation of the law, you should be able to use it as evidence.
Personally, I'll only take action against a motorist if they try to back up their talk with sheet metal, something akin to degnaw's head on close pass, and anything less than that, I'll just keep the video recording in a separate file in case of a future incident with the same motorist.