Two examples
-- The acceptance by modern society of homosexual relationships, and that those committed ones should not be denied the same legal standing as heterosexual life partners, beginning with the right to declare their commitment officially -- i.e., marriage -- and continuing through contract and inheritance law and other established "spousal" benefits.
-- The concept that only individual women have the right to decide whether or not to become, or remain, pregnant.
There are others, most having to do with racial, religious and gender equality... I"m sure you'll be able to make a list. Begin with anything fundamentalists are against.