Ayatollah Khomeini, who studied Islam all his life, said that non-Muslims are somewhere between "faeces" and the "sweat of a camel that has consumed impure food". Little wonder: The Koran dehumanizes non-Muslims, describes them as "animals" and beasts:
Verily, those who disbelieve (in the religion of Islam, the Qur'an and Prophet Muhammad) from among the people of the Scripture (Jews and Christians) and Al-Mushrikun will abide in the Fire of Hell. They are the worst of creatures. (98:6)
Verily, The worst of moving (living) creatures before Allah are those who disbelieve , - so they shall not believe. (8:55)
Verse 7:176 compares unbelievers with "panting dogs" with regard to their idiocy and worthlessness.
Verse 7:179 says that they are much worse than "cattle".
Verse 9:28 says that the unbelievers are unclean.
Verse 6:111 says they are ignorant.
Verse 23:55 says they are helper of the devil.
Verse 5:60 even says that Allah has turned Jews into monkeys and pigs in the past. This gets repeated by verses 7:166 and 2:65.
A Hadith (Bukhari 54:524) says that Mohammed held rats for "mutated Jews" (also confirmed by Sahih Muslim 7135 and 7136).
Verses 46:29-35 even say that unbelieving humans are worse than the demons who believe in Mohammed.
According to Islamic law, non-Muslims may be owned by Muslims, but - in accordance with the Islamic message - a Muslim should never be the property of another Muslim (unless they convert to Islam under enslavement). Even Christians and Jews are not considered completely human because the punishment for the killing of one of them is limited to one-third of the compensation due for the unintentional killing of a Muslim.