Lately, I have been seeing a very gradually increasing number in Child Pornography, even on major social Media Sites. I'm always around and on Google+, and I've been seeing this hang around. Just yesterday, I saw a major one growing 250 members a day, we only temporarily had it terminated, but it needs to be more strict.
Social Sites like Google+, Facebook, Twitter and so forth should be reporting to Police the moment they see a report on Child Pornography, and let Police review it, after a suspension on the communities/accounts has been placed on them for further investigations.
It varies as well on where it is. It's past beyond Unethical to let such things happen. Just imagine if it happened to your child, you would be well past enraged at the very least. Everyone should be equal.