Ethics have always been situational where the law is concerned; that's why we treat cold-blooded murderers differently from those who kill in self-defense. Objectively, they both did the same thing, but we judge on the SITUATION. The "moral compass" has always been a personal thing.
Secularist progressive is a phrase coined by Bill O'Reilly in his book "Culture War".
It's an ideology that rejects any notion of a supreme being having any influence whatsoever in how we conduct our personal lives or a society as a whole. It advocates situational ethics, i.e. an anything goes mentality, over any standards requiring a moral compass to strive for a higher plane of existence.
Not all conservatives are against abortion and gay marriage but the majority of blacks and Hispanics in states where gay marriage was voted down voted against it. They are primarily democrats.