Just about all of them.
To be fair, I can tolerate disagreement in some things. But inevitably, I end up losing friends because their views devalue me as a person.
I believe first of all that all people, men and women, no matter what ethnic or racial background, are equal. Bill Gates is equal as a person as a prisoner on death row. An old, senile woman is of the same value as President Obama. Anyone who puts someone else on a pedestal because of skill, looks, or accomplishments can get no respect from me, because by lifting one person up that person is devaluating everyone else. One can mention differences without disparaging people because of those differences, and sadly, I have been on the receiving end of barbs thrown by people who claim to believe in equality and fairness.
I also believe very strongly in the idea that men and women are equal, if different in some respects. Gender should not be a barrier to opportunity -- be it marriage or occupation. I'll be the first to admit that I engage in activity that is not befitting of my ideals, but I feel that men and women should be free to act with sovereignty of their bodies -- which in the case of women includes pregnancy. Any man who thinks he can impregnate me and I not have a say about it after the fact won't be getting there in the first place.
Lest you think I am completely liberal, I also am very anti-animal rights. Humans are people and deserving of life and liberty. Animals, on the other hand, should not be afforfed the same luxury. Anyone who condemns my right to eat cheap steak that has been mass bred and mass slaughered will not get my respect.
Finally, I believe that language and lineage are critical to culutral identity and loss of either is an irreparable crime, as bad as mass killing. That being said, the loss must be patched or matched in order for people who society stations at different levels so that they may become the equals in society that they are in actuality.