Ms Karen White:

It is important to note that Twitter is a live public service. We do not exert editorial control over any of the user-generated content that we see on our service. That is not to say that we do not take our responsibilities with regard to the safety of our users very seriously. When it comes to issues like abuse, illegal material, terrorist-related content and child sexual exploitation, we have in recent years worked to leverage the technologies that we have to proactively identify some of that-----