I'd favor having him declared legally insane (in spite of the Soviet Union's use of this tactic) and when he's buried, make sure his body faces away from Mecca.
But the larger problem of Islam would remain. The Holy Qur'an is a path to world domination, ala Hitler, Napolean. The peaceful Muslims are the ones that ignore the Holy Qur'an's most abominable commands (9:121 "O you who believe! Fight such of the disbelievers as dwell near to you and let them find firmness in you...") But they are not good Muslims.
At the very least, Islam is organized crime when you consider 20% of their ill gotten gains are to shared with their church (8:41). Maybe our Justice Department should take them seriously and jail their leaders and bankrupt their organization. From what I hear, the Mafia only charges 10% when you operate under their protection.
If the founder of the Ku Klux Klan had only claimed that God had commanded him to kill all the blacks, today all the Grand Dragons would be on TV telling us "KKK is love" and complaining about all the "KKK bashing" that's going on.
Right on target. The only thing I can find to disagree with you on is your use of the word "Holy" to describe the Muslim Murder & Mayhem Manual.
There are plenty of other adjectives that more accurately describe the qualities inherent in the book:
Diabolical, twisted, evil, malignant, vile, despicable, contemptible, depraved, wicked, abominable, loathsome, foul, malevolent, nefarious, atrocious, appalling, dreadful, awful, horrendous, inexcusable, unspeakable, outrageous, scandalous, immoral, shameful, indecent, reprehesible, decadent, perverse, vicious, inhuman, sadistic, fierce, brutal, nasty, malicious, merciless, incorerent, disjointed, rambling, confused, illogical, horrid, revolting, nauseating ...