I am always careful to identify the actual group which is at war with us as "Islamonazis", "Islamakazis" and "Wahhabist____ (with occasional unflattering qualifications, depending on how mad I am) in order to stress that there IS a peaceful group that isn't out to kill us all, but there IS a warloving group that IS out to kill us all...
HOWEVER, teaching Islam in a public school also falls under the Seperation of Church and State issue, so if you feel that HU is teaching his son too much intolorance, perhaps it should be attacked from that angle.