Tangent discussion split off from here. Feel free to edit the title to your liking. ~Iskar
edit: adding in context from the other thread:
2:256
There is no compulsion in religion. Righteousness is now distinct from error. He who disbelieves in the idol and believes in Allah has grasped the firmest tie that will never break. Allah is Hearing, Knowing.
No compulsion in religion.
9:5
When the sacred months are over, slay the idolaters wherever you find them. Take them and confine them, then lie in ambush everywhere for them. If they repent and establish the prayer and pay the obligatory charity, let them go their way. Allah is Forgiving and the Most Merciful.
Kill idolaters until they become muslim.
9:29
Fight those who believe not in Allah nor the Last Day, nor hold that forbidden which hath been forbidden by Allah and His Messenger, nor acknowledge the religion of Truth, (even if they are) of the People of the Book, until they pay the Jizya with willing submission, and feel themselves subdued.
Kill Jews and Christians (and possibly others) until they willingly submit and pay the dhimmi tax. Alternatively they can convert and become Muslim.
What is there to learn from this?
The quran says no cumpulsion in religion. The quran allows for killing people until they become muslim or (for some) pay the jizya in order to maintain their own faith.
Killing unbelievers, or forcing a second class status on some, unless or until they become muslim, must not be considered compulsion.