The "civil right" phrase is a red herring. You can define any arbitrary item as a civil right - let's say unborn children deserve not to be killed, and thus we should ban all abortion. Then we can talk about any CEO who's donated to Planned Parenthood as stripping civil rights from fetuses and should be unfit for CEO-ship. Gay marriage is at a similar level of contention. Many believe it to not be a a civil right at all until very recently, nor is it accepted by many cultures. Or some accept civil unions but not semantically marriage. If you think you're always going to be right, there will be a definition of "civil right" or just plain "correct" that is diametrically opposed to you.

https://news.ycombinator.com/item?id=7526663