Facebook has other ties to Definers, the GOP-led opposition research group

In the wake of a fairly catastrophic behind the scenes glimpse into Facebook's high-level decision making, one question remains: Who brought a controversial Republican opposition research firm into the fold? In a long call with reporters on Thursday, Mark Zuckerberg denied any knowledge of his company’s own dealings with Definers Public Affairs, the firm in question. Definers Public Affairs is “an outfit of elite GOP operatives” specializing in opposition research — a cutthroat dark art that’s the norm in politics but anomalous in virtue-conscious Silicon Valley.