In Judaism we have a concept called "chillul Hashem" which is loosely translated as "desecration of the name of G-d". In practical terms this means that if a Jew does something wrong in the public arena he has caused the Jewish people, the Jewish religion , and ultimately G-d, to be viewed in a negative light. Since the Jews are supposed to be a "light unto the nations" this is obviously a very serious infraction.
It occurs to me that this concept is entirely absent in the muslim world. They act like uncivilized barbarians worldwide as a result of some cartoons, with absolutely no sense of shame. Who could possibly be attracted to Islam after witnessing this shameful display?