Of course it's correlated with the red states; when the person they didn't want to see win won, they said anything they could to degrade him. Certainly the n word is the easiest and most offensive word to throw out, but that doesn't necessarily imply racism. Though I'm not defending their use of that extremely offensive word, it's highly disingenuous to equate it to racism.
From wiki: "Racism is usually defined as views, practices and actions reflecting the belief that humanity is divided into distinct biological groups called races and that members of a certain race share certain attributes which make that group as a whole less desirable, more desirable, inferior or superior"
A frustrated exclamation of a horribly degrading word to express their anger != A view that African Americans are inferior.
It certainly doesn't show class and I'd bet you'd surely find a higher proportion of racists among those who tweeted that word, but calling them all racists? Wrong.
Can of worms = opened. The "n word" does imply racism. I'm not going to write a book about it, but I'll just put that out there for you to think about.
it was a very biased 'study'. from the article, it appears that this person specifically targeted people that were anti-Obama, forgetting entirely all the racists tweets that threatened riot and death if Romney won.
The n-word is not necessarily racist, if used in the right context. But given the context of most of these tweets it is absolutely used in racist tones, ie. "niggers in the whitehouse!"