OK, I'm gonna play my age card (and not for the first time).
When Black civil rights were finally moving forward in the 1960s US TV commercials began to appear featuring Black people. You can't imagine today how radical and disturbing that was to much of White America. There was debate whether consumers in the Old South, and elsewhere, would boycott those products, and whether these ads were business suicide.
I still see ads featuring Black people today, so I guess maybe not business suicide after all. Perhaps that's what helped make Blacks appear not so alien to Whites? Not with all Whites, as we see with this Charleston horror. The Old South will go down fighting, right to the bitter end, Confederate flags flying and all.
And what did those ads cause? They helped make being Black less strange to Whites, but the everyday norm in everyday situations. Most Whites hardly blink today when they see a Black spokesperson on TV, or in some print ad for a product. I can promise you that wasn't the case over 50 years ago in the US.
Now we're going through the same thing with LGBT. For me it's very much déjà vu. The same Right Wing forces are opposing us that opposed Blacks when I was a teenager. I hope they fail once again. They won't fail entirely all at once, they still can hurt people, as Charleston proves.
But failing over time, a sluggish process, unfortunately. So that advertisements featuring LGBT couples are a good thing, starting the slow acceptance of a minority group all over again.