Excuse me sir but once again what mainstream Christian sect calls for such things? Protestanism? Catholicism? Eastern Orthodox? The answer is that no mainstream organization calls for anything remotely like the rules in Saudi Arabia; whereas, every single mainstream Islamic sect calls exactly for the rules like in Saudi Arabia.Countries like Saudi Arabia are that way, because the religious are in control of the courts and laws and so forth. There are plenty of Christians who would love nothing more then some of the rules in Saudi Arabia and other places if they had the power.
I cannot stress this enough, those things which I listed are not extremist positions within Islam, they are the only positions within Islam and the only interpretations held by all 5 schools of Islamic dogma.I cannot stress this enough. Religion of all stripes but especially Islam is a tool for extremism, not the be all, and end all factor. One has to take all circumstances into account. Geo-Political, Historical and economical.