A comparison is useful here.
Some not all Christians get upset and protest when artist, or others slander them for what they do NOT believe.
Muslims get upset when you present WHAT they believe.
Are there verses in the Bible that are difficult to deal with? Sure there are. Christians and Jews have developed theology or possibly rationalizations to deal with those.
Islam needs to do the same.
Until Next Time
The blogger who isn't really offended by very much