"The Democrats say they value freedom of speech and dissent..."
then run an excerpt of the currently-running commercial with the voiceover, "So why are they trying to stifle our freedom of speech?"
then switch to the outraged Dems who are calling for this ad to be pulled. Follow with the voiceover:
"Hypocrisy is an ugly thing."
If that doesn't give a few 5th-column Leftists a coronary, I don't know what will...