What do Republicans mean when they say that Democrats were mean to Romney?

[NorCalifornio]

I can see what they mean. For example, the "binders full of women" comment. It was really just an awkward phrasing, but Democrats mocked him mercilessly for it. I remember people saying things like "This idiot thinks women come in binders", even though they clearly knew what he meant.

For the record, I voted for Obama. And i don't think being "mean" to your opponent in an election is necessarily bad. A lot of the Obama campaign's negative messaging on Romney boiled down to "this rich idiot doesn't understand your problems" (true, IMO). Some might call that "mean", but it works.