Well we don’t know what anybody is going to want to keep. Laws concerning the archiving of footage haven’t been figured out yet for places that don’t have the body cams in use. Any minor incident could suddenly be a factor in a case involving the police if some lawyer wants to see what a cop was doing on such-and-such a day before an offense took place. The public and the lawyers will not be satisfied with a highlight reel.
Yes, that’s true. However, having a week’s worth of video leading up to a shooting, for example, is better than having no video at all. You should also consider the effect that cameras would have on the bad cops.