I would not ban the Coran if that is what you asking me, no.
Ideas are defeated, ridiculed, marginalized, not banned.
(it only increases their allure)
I haven't yet read all the replies on this thread so I may be repeating but I'll risk it...
Would you use the "free speech" argument to defend a person who yelled: "FIRE", in a crowded theatre, when there was none?
I ask because it seems that you, and many here, believe that a person's right to "free speech" extends even to the point of harm to others.
It would be very interesting to see how different the reaction of many, who would have no limits on free speech, would be if their favorite web site, and its membership, were slandered (or libeled, if you prefer) with the obvious intent of causing it, and them, irreparable harm.