No, I don't, unfortunately.
First let me say that I have the highest respect for Professor Moon. These sorts of exchanges I think are profitable exchanges, as opposed to the kind of debate and overheated rhetoric that sometimes characterizes these discussions. I think intention actually is a dangerous precondition if we are focusing not on the wrongdoer. If we want to punish a wrongdoer, then intention is an absolute prerequisite, but if we are focused on the speech itself, then searching for intention is a side trip that isn't profitable. What will inevitably happen is legal maxims like “a person is taken to intend the inevitable consequences of their acts”, which really leaves out intention from the requirement.
And it's the same thing with violence. What Professor Moon is saying is not all that different from what experts on anti-Semitism and other forms of extreme genocidal hatred say. The precursor is the dehumanization and demonization of the target group to the point where the audience says, “If that's true, then these people have no right to be around here”. It doesn't have to be a direct incitement to violence. The demonization is an indirect incitement to violence, so again importing that as a necessary prerequisite is just a side trip, because you will find it by necessary implication, in any event. You'll never be able to prove objectively the presence of a subjective state of mind or intention on the part of the wrongdoer and you will never be able to point to the direct incitement to violence in the most vile sorts of propaganda. It is all implicit.