The following links to an article that was written in 1989, when the Ayatollah Khomeni put out a fatwa to kill Salman Rushdie over his book “The Satanic Verses”. (That fatwa against Rushdie has recently been renewed, after the publication of the 12 Danish cartoons of Mohammed. The thinking, if you can call it that, is that if Rushdie had been killed over his book, Western cartoonists would not have dared to draw Mohammed.)
This article is as pertinent as in 1989. Western appeasement of those who threaten free speech with violence is still with us, and is still as stupid.
Religious Terrorism by Leonard Peikoff.