Where do you draw the line? Terrorism? Porn? Child porn?
There is no need to regulate legal pornography.
With terrorism, e.g. propaganda, it is difficult. But in the end, the idea of freedom of information prevails. Of course, platforms should have the ability to regulate violent content (e.g. ISIS beheading videos), but we shouldn't give the state the ability to regulate that, because the definition of terrorism can be expanded very quickly if necessary.