Let me compare it to something else - let's say you have a charity collecting clothes. If somebody dropped a bag full of cocaine into one of your collection depos, and you called the police to say that this has happened, it is purely because of some little remains of common sense that you would not be charged with drugs possession. But under the letter of law, you could be.

If your camera records a rape of a child, then under the letter of law you are guilty of recording and possession of children pornography, no matter whatever you wanted to record it or not. Sure, most of the time judges will exhibit common sense about this, but it's a problem that if they wanted to, they could make you do jail time and it would be entirely within the law. Laws that are ambiguous and that can stretch depending how the police/judges see you,are the worst, it should be changed.