The Bible, Koran and Talmud are only three of the many religious books to be challenged and/or banned.
In 1993 a challenged from the Noel Wien Library in Fairbanks [AK] claimed the Bible was "obscene and pornographic", but was retained. This isn't an old problem or found just a US problem. 1986 found Ethiopia under a socialist military government who confiscated and/or destroyed the Koran.
Visit the ALA to find out more about Banned Books Week.