In law, hate speech is any speech, gesture or conduct, writing, or display which is forbidden because it may incite violence or prejudicial action against or by a protected individual or group, or because it disparages or intimidates a protected individual or group.
Source :
http://en.wikipedia.org/wiki/Hate_speechSpewing out nonsense against jews, calling americans terrorists, etc, is all going to incite violence and prejudice against non muslims in the muslim world, hence its not, and shouldn't be protected by freedom of speech.