Context, Please

Just now I saw a headline on the Huffington Post that a Democratic Senate candidate said that his state wouldn't elect his opponent because "we're not that dumb." The article in question reveals that this was during the debate, and the line was used in a very particular context. Republican Richard Mourdock, a veeery right-wing candidate who Tea Party'd Dick Lugar in the primary, was trying to back off of statements he had made suggesting the unconstitutionality of Social Security and Medicare. Democrat Joe Donnelly said this:

"I may have been born at night, but I was not born last night. When you meet with the Madison Tea Party and you say to them, you show me where in the Constitution it allows Medicare, and you show me where in the Constitution it allows Social Security, we're not that dumb. We know what you are implying, and we know what you are driving at. You also said Medicare should be turned into a voucher system."

This is pretty standard stuff, right? It's the idea that, look, you're trying to pull a fast one on the voters of this great state, but we're not idiots, you can't fool us. Now, if Donnelly had just said, apropos of nothing in particular, "I know Indiana won't elect Richard Mourdock because we're not that dumb," it would be a serious gaffe. It would be, among other things, deeply insulting to everyone in Indiana who planned on voting for Mourdock. This line isn't anything like that, however. He's not making any accusation against anyone based on their current intentions, just saying, look, if you think that line will work, think again, we're not that dumb.

So it's misleading to put just the "we're not that dumb" line in your headline. It could either be something really insulting that would probably deserve to damage a candidate (except that nothing except partisan affiliation actually matters, blah blah blah), or something completely innocuous like this.