The “We had to destroy Americans freedom to believe whatever they wish in order to preserve America” is as idiotic as saying that “We had to destroy the Constitution in order to save the Constitution.”
Classical satanism, the mayan and aztec religions, and several other religions that rely on human sacrifice as part of their worship are illegal in this country. Even some American Indian religions have been classified as illegal. We don't cotton well to killing people to please your god.
Moslems kill because the koran COMMANDS them to kill. Fighting against, killing, and or enslaving non-believers is an inseparable part of islam. It is the central facet of jihad and it is commanded of every moslem.
We do not accept human sacrifice as being a valid form of religious worship in this country. Therefore islam is not a valid religion in this country.
It's really not that hard to understand if you are not a moslem and understand the American ideal.