Tonight, FNC’s Bill O’Reilly went after Baltimore Sun TV critic David Zurawik over a blog post he wrote on Friday. Zurawik criticized O’Reilly and fellow Fox News host Sean Hannity for their interviews with ACORN video star Hannah Giles and Andrew Breitbart on whose site, BigGovernment.com, the videos appeared. ACORN is now suing them alleging they violated Maryland’s two-party consent law. One of the videos was shot in ACORN’s Baltimore office.

In his post Friday, Zurawik wrote, “Only on the cube-sided Bizarro Planet are [James] O’Keefe and Giles champions of the First Amendment.” Tonight, O’Reilly fired back: