Shouting "All U.S. troops out of Iraq now. No more blood for oil," a protester got through the barricade surrounding the MSNBC set outside Drexel University, site of tonight's Democratic debate.

The protester made it to the stage where Chris Matthews was conducting a post-debate Q&A with strategist Joe Trippi. The incident only lasted a few seconds. Matthews laughed it off by saying, "Well, I agreed with the sentiment at least."