Left Wing Groups Push Fox News Ad Boycott Over 'Global Warming Denial'

Breitbart.tv Exclusive: Activist and filmmaker Robert Greenwald, the man behind the documentary “OutFoxed,†is back — this time with an attack on Fox News for an alleged editorial stance skeptical of global warming concerns.

Greenwald, along with fellow left wing activists Sierra Club and Move-On.org, are asking their supporters to put pressure on Home Depot to stop advertising on the top-rated cable news network.

Greenwald also conducted a recent Internet campaign against a planned Fox News presidential debate in Nevada. He’s also credited with pushing top-tier Democrats to pull out of a Congressional Black Caucus debate.