why some people are against Islam

http://articles.cnn.com/2012-09-13/world/world_anti-islam-filmmaker_1_israeli-citizenship-adventure-film-islam

I am so sad about what happened these days because of some people stimulate others for violent and anger. Insulting any religion is crime and people still do this in public.That is what happened, a group of Jewish in United States produced a movie that is Anti-Islam religion because this movie shows prophet mohamed as portrayed as a womanizer, buffoon, ruthless killer and child molester. This situation is unacceptable to muslim people all over the word. This people who did this should get punishment to stop insulting any religion in media. Allah says in Quran " Say ye: "We believe, in Allah and the revelation given to us and to Abraham Isma`il Isaac Jacob and the Tribes and that given to Moses and Jesus and that given to (all) Prophets from their Lord we make no difference between one and another of them and we bow to Allah (in Islam)."
 قُولُوا آمَنَّا بِاللَّهِ وَمَا أُنْزِلَ إِلَيْنَا وَمَا أُنْزِلَ إِلَىٰ إِبْرَاهِيمَ وَإِسْمَاعِيلَ وَإِسْحَاقَ وَيَعْقُوبَ وَالْأَسْبَاطِ وَمَا أُوتِيَ مُوسَىٰ وَعِيسَىٰ وَمَا أُوتِيَ النَّبِيُّونَ مِنْ رَبِّهِمْ لَا نُفَرِّقُ بَيْنَ أَحَدٍ مِنْهُمْ وَنَحْنُ لَهُ مُسْلِمُونَ