For arguments sake, let say the attacks were because of the movie. If so we have to look at the real muhammad. Lets look at the facts:
I watched the portion of the movie that is on youtube. Its tacky. The acting is bad. Unfortunately there is some truth in the movie.
Was muhammad a pedophile? You be the judge. He married Aiesha,( not signed a marriage contract as some muslims try to say), when she was 6. He consummated the marriage when she was 9. I leave it to the reader to decide if he was a pedophile.
Was muhammad a sexual deviant? We'll look at what the qu'ran and the ahadith say, and again you be the judge:
Qur'an (33:37) - "But when Zaid had accomplished his want of her, We gave her to you as a wife, so that there should be no difficulty for the believers in respect of the wives of their adopted sons, when they have accomplished their want of them; and Allah's command shall be performed." No doubt millions of young Muslims, trying to outdo one another at memorizing the Qur'an, have wondered about what this verse means and why it is there. In fact, this is a "revelation" of convenience that Allah just happened to hand down at a time when Muhammad lusted after his daughter-in-law, Zaynab, - a state of affairs that disturbed local customs. The verse "commands" Muhammad to marry the woman (following her husband's gracious divorce). As for why this should be part of the eternal word of God...?
Qur'an (33:50) - "O Prophet! surely We have made lawful to you your wives whom you have given their dowries, and those whom your right hand possesses out of those whom Allah has given to you as prisoners of war, and the daughters of your paternal uncles and the daughters of your paternal aunts, and the daughters of your maternal uncles and the daughters of your maternal aunts who fled with you; and a believing woman if she gave herself to the Prophet, if the Prophet desired to marry her-- specially for you, not for the (rest of) believers; We know what We have ordained for them concerning their wives and those whom their right hands possess in order that no blame may attach to you; " This is another special command that Muhammad handed down to himself that allows virtually unlimited sex, divinely sanctioned by Allah. One assumes that this "revelation" was meant to assuage some sort of disgruntlement in the community over Muhammad's hedonism.
Qur'an (33:51) - "You may put off whom you please of them, and you may take to you whom you please, and whom you desire of those whom you had separated provisionally; no blame attaches to you; this is most proper, so that their eyes may be cool and they may not grieve, and that they should be pleased" This is in reference to a situation in which Muhammad's wives were grumbling about his preference for sleeping with a slave girl (Mary the Copt) instead of them. Accordingly, Muhammad may sleep with whichever wife (or slave) he wishes without having to hear the others complain... as revealed in Allah's literal and perfect words to more than a billion Muslims.
Qur'an (66:1-5)- "O Prophet! Why ban thou that which Allah hath made lawful for thee, seeking to please thy wives?..." Another remarkable verse of sexual convenience concerns an episode in which Muhammad's wives were jealous of the attention that he was giving to a Christian slave girl. But, as he pointed out to them, to neglect the sexual availability of his slaves was against Allah's will for him!
Qur'an (4:24) - "And all married women (are forbidden unto you) save those (captives) whom your right hands possess." Allah even permitted Muhammad and his men to have sex with married slaves, such as those captured in battle.
From the ahadith:
Muslim (8:3309) - Muhammad consummated his marriage to Aisha when she was only nine. (See also Bukhari 58:234 and many other places). No where in the reliable Hadith or Sira is there any other age given.
Bukhari (62:18)- Aisha's father, Abu Bakr, wasn't on board at first, but Muhammad explained how the rules of their religion made it possible. This is similar to the way that present-day cult leaders manipulate their followers into similar concessions.
Muslim (8:3311) - The girl took her dolls with her to Muhammad's house (something to play with when the "prophet" was not having sex with her).
Bukhari (6:298)- Muhammad would take a bath with the little girl and fondle her.
Muslim (8:3460)- "Why didn't you marry a young girl so that you could sport with her and she sport with you, or you could amuse with her and she could amuse with you?" Muhammad posed this question to one of his followers who had married an "older woman" instead of opting to fondle a child.
Bukhari (4:232) - Muhammad's wives would wash semen stains out of his clothes, which were still wet from the spot-cleaning even when he went to the mosque for prayers. Between copulation and prayer, it's a wonder he found the time to slay pagans.
Bukhari (6:300) - Muhammad's wives had to be available for the prophet's fondling even when they were having their menstrual period.
Bukhari (93:639) - The Prophet of Islam would recite the 'Holy Qur'an' with his head in Aisha's lap, when she was menstruating.
Bukhari (62:6) - "The Prophet used to go round (have sexual relations with) all his wives in one night, and he had nine wives." Muhammad also said that it was impossible to treat all wives equally - and it isn't hard to guess why.
Bukhari (5:268) - "The Prophet used to visit all his wives in a round, during the day and night and they were eleven in number." I asked Anas, 'Had the Prophet the strength for it?' Anas replied, 'We used to say that the Prophet was given the strength of thirty men.' "
Bukhari (60:311) - "I feel that your Lord hastens in fulfilling your wishes and desires." These words were spoken by Aisha within the context of her husband having been given 'Allah's permission' to fulfill his sexual desires with a large number of women in whatever order he chooses. (It has been suggested that Aisha may have been speaking somewhat wryly).
Muslim (8:3424) - One of several narrations in which a leering Muhammad orders a clearly startled woman to suckle a grown man with her breast so that he will become "unlawful" to her - meaning that they can live under the same roof together.
Tabari IX:137 - "Allah granted Rayhana of the Qurayza to Muhammad as booty." Muhammad considered the women that he captured and enslaved to be God's gift to him.
Tabari VIII:117 - "Dihyah had asked the Messenger for Safiyah when the Prophet chose her for himself... the Apostle traded for Safiyah by giving Dihyah her two cousins. The women of Khaybar were distributed among the Muslims." He sometimes pulled rank to reserve the most beautiful captured women for himself.
Tabari IX:139 - "You are a self-respecting girl, but the prophet is a womanizer." Words spoken by the disappointed parents of a girl who had 'offered' herself to Muhammad (he accepted).
There is much more evidence available from islamic ahadith, from the sharia law manual " The Reliance of The Travelar". I don't have the time or the space available to list all of the facts. What I have listed should be more than enough. You decide.