The Koran Condemns

Condemned

What the Koran condemns or disapproves of:

Kufr (disbelief). (Throughout the Koran.)
Shirk (worshiping other things besides Allah). ("it is as if he had fallen from the sky" 22:31)
Murder. (4:92-93; 5:32)
Conditions may apply.
Girl infanticide. (81:8-9)
Rejectors of the Koran. ("They are the worst of creatures." 98:6)
Apostasy.
Polytheism.
Polytheists. ("Pagans are unclean" 9:28)
Idols. (22:30)
Zina (fornication or adultery). (24:2; 25:68; 60:12)
Marrying the fornicators with the chaste. (24:3)
Marrying an ex-wife of your father. ("shameful and odious, an abominable custom indeed" 4:22)
Marrying polytheists. (2:221)
Marrying the widows of the Prophet. (33:53)
Sex with a menstruating woman. (2:222)
Homosexuality. (7:80-81; 26:165-166; 27:54-55; 29:28-29)
Alcohol/intoxicants. (5:90-91)
Gambling. (5:90-91)
Theft. (5:38)
Defrauders. (83:1)
False testimony. (22:30)
Practicing magic. (113:4)
Causing annoyance to the Prophet (by staying for a chat after the meal). (33:53)
Believing that angels are female. (37:150; 43:19)

What the Koran does not condemn or disapprove of:

Slavery.
Sex with slave girls. (It's actually explicitly allowed.)
Child abuse.
Child marriage.
In Islam girls are considered to be mature as soon as they menstruate (at least according to orthodox interpretations.)
Spousal abuse.
In fact, hitting is permissible in certain situations according to 4:34.
Rape. (Though Zina is considered a sin.)
Forcing your wife to have sex isn't considered rape by orthodox Muslims.
Racism.
Honour killings.
Although murder is condemned, mentioning this explicitly would have done the world a lot of good.
Genital mutilation.