content: As far as I know, there is no such technology (yet) that could replace manual content moderation. People are creative, so if you ban common offensive keywords, for example keyword "fuck", people would just bypass the filter by writing "fuc*k" instead. This one word alone suddenly got hundreds of variations. The same goes for videos, images and audio, the only difference is that the more complex content (video vs a simple keyword), the more complex the algorithm to fight this. It's an endless loop and I am pretty sure there will never be a perfect solution to this problem.