Here's a legislative example of the phenomenon I described the other day with the anti-Hillary YouTube video.

Two videos have been posted on YouTube deriding legislators for their role in the debate over a piece of pro-union legislation.

"This is what's going on with these Democrats," says the video narrator. "They're sick, they're extremely mean-spirited, they're trying to hurt people.

Both McCarthy and Mertz have denied this account. "It's extreme propaganda from people who apparently don't mind lying," McCarthy told the Des Moines Register.

Yet another anonymous electronic medium lowers the level of discourse -- not surprising, but troubling and something to watch.

UPDATE: By the way, the maker of the anti-Hillary video, a consultant with ties to the Obama campaign, has been outed and has resigned.