As surely as presidential candidates start sniping at each other minutes after promising to take the high road, Internet video attacks now accompany every election.

The current race is no exception. Only this time, Blink notices news outlets are fair game.

To wit, meet filmmaker Robert Greenwald, who is revving up his anti-Fox News machine and producing videos about the cable network’s election coverage.

“After breaking three television sets in anger, I decided there are ways I can be more productive,” said the liberal producer, who in 2004 made the documentary “Outfoxed: Rupert Murdoch’s War on Journalism,” which examined Fox’s coverage of John Kerry’s presidential campaign.

Mr. Greenwald and his Brave New World media company most recently created a 3-minute “Fox Attacks Obama” video, launched on various liberal blogs.

Mr. Greenwald said he has not decided which presidential candidate he’ll support.

Asked about Mr. Greenwald, a Fox News Channel spokeswoman said, “Everyone has a right to free speech.”