Some MSNBC intern tweeted something mean! Oh the humanity!
No shit, it's hardly the end of the world, but the scenario people were saying was a ridiculous MSNBC fantasy was a reality. Rightwing people did get upset about a commercial airing with a mixed-race family. Not all right wing people. But right wing people. There's still racism in America. Accept that, condemn it when it pops up, and move on.
And for people asking for proof that people objecting to mixed-race families by talking about 'negroids' are conservatives, are you serious? Anti-miscegenation sentiment is by definition conservative (or even more accurately, regressive, but those are basically the same in today's Tea Party right wing). I'm sure you can find a few non-white people objecting to mixed race marriages, especially in foreign countries, but do you seriously think the people objecting to this poll are not predominately white?
http://www.gallup.com/poll/163697/approve-marriage-blacks-whites.aspx "Ninety-six percent of blacks, 84% of whites approve" of mixed-race marriage. If you want, I'll find the additional polls that show that sentiment is concentrated in the South, where people are much, much more likely to be conservative, but I have a hard time believing that's really necessary.
This whole non-issue is like if Fox News tweeted "time for the left wing to call for gun control" in response to a gun ad going on during the Superbowl, then the DNC chairman demanding an apology for this super mean accusation because not every left wing person cares about gun control. Left wing people have called for gun control, in reality, and also the DNC doesn't speak for all 'left wing' people (nor do attacks on 'left wing' people equate to attacks on Democrats). Right wing people have bashed this commercial for showing a mixed race family, in reality, and also the RNC doesn't speak for 'right wing' people, nor are attacks on 'right wing' people attacks on Republicans.