Yes some imams really do preach the destruction of the Jewish faith (Saturday) and then the Christian faith (Sunday). How many times have we heard various Arab leaders state their desire to "push the Jews into the sea"?
Q: How many times have Arabs actually tried to accomplish this?
A: three times (1948, 1967, 1973).
http://www.youtube.com/watch?v=5LjWV16Lj8A
