Have already voiced their concern about the killing ambassador. According to them, it appears certain villainous individuals may have been actually targeting him for awhile, and used the protests as an ideal masquerade. Thus it seems then that real motive behind igniting these rages and protests may have very well been actually about politics and power, and not religion. And the emotional unknowing mobs were made scapegoats by these culpable and cunning groups.
Think about it, the movie was made a long time back, and no one was aware of it when all of a sudden it appears dubbed in Arabic and/or with Arabic subtitles, and circulated among the Muslim countries, and of course other Asian countries too. Who did this? And why so many months later?
Of course these are all theories but what remains certain is at the end of the day we must remember that as long as we remain in the dark about what our faith truly commands us with, specially in times of strife, we will always be then easily manipulated by enemies posing as our saviors!