Even a tribute video to the late Sen. Edward Kennedy (D-Mass.) provided an opportunity for Democrats to knock Mitt Romney, as many speakers have tonight. 

In the middle of the video came a clip from the debate between Kennedy and the current Republican presidential nominee, when Romney ran unsuccessfully for Senate in 1994. 

"I am pro-choice. Mitt Romney is multiple choice," Kennedy says in the clip.

Republicans were not amused:

Democratic National Committee vice chairman Donna Brazile responded:

 Watch the tribute: