If a muslim leaves islam, he must be killed, after Mohammed

Note 1: I encourage everyone (Moslem like not-Moslems) to enter the debate. Make researches about this. Ask questions to Moslems, imams, unbelievers, about what I say.

Note 2: The whole page has not been translated yet.

Whoever changes his Islamic religion, kill him.  Sahih Al-Bukhari (9:57)

Narrated 'Abdullah:
Allah's Apostle said, "The blood of a Muslim who confesses that none has the right to be worshipped but Allah and that I am His Apostle, cannot be shed except in three cases: In Qisas for murder, a married person who commits illegal sexual intercourse and the one who reverts from Islam (apostate) and leaves the Muslims." 
Sahh Muslim V9 B83 N17

Sahih Bukhari Volume 6, book 61, numero 577:  I heard the Prophet saying, "In the last days (of the world) there will appear young people with foolish thoughts and ideas. They will give good talks, but they will go out of Islam as an arrow goes out of its game, their faith will not exceed their throats. So, wherever you find them, kill them, for there will be a reward for their killers on the Day of Resurrection."

Sura IV verse 89: "... So choose not friends from them till they forsake their homes in the way of Allah ; if they turn back ( to enmity ) then take them and kill them wherever ye find them... "