Again, why? What harm do hate speech law cause?
We already have a perfectly fine set of laws that provide a strong right to free speech. A new hate speech law would either be redundant, or would weaken our civil liberties.
Incitement often entails language that would meet the definition of hate speech that I quoted above. One can hardly disapprove of incitement while approving of the hate speech that is often the means to incite violence.
You'll have to clarify what you mean by "incitement". Do you mean - specifically - incitement to imminent violence? If so, we've already gone over the fact that incitement to imminent violence is NOT protected speech. If not, what do you mean in this case when you say "incitement"?