You might be thinking of Andrew Breitbart's speech at the 2012 CPAC.
Breitbart said:
I have videos, this election we’re going to vet him. We are going to vet him from his college days to show you why racial division and class warfare are central to what hope and change was sold in 2008. The videos are going to come out, the narrative is going to come out, that Barack Obama met a bunch of silver ponytails in the 1980s, like Bill (Ayers) and Bernadine (Dohrn), who said one day we would have the presidency...
Less than four weeks later, Andrew Breitbart was dead.
-PJ
The left stops at nothing to get their way