"The View" co-hosts Whoopi Goldberg and Joy Behar stormed off the set Thursday during a contentious interview with Fox News host Bill O'Reilly. As the cast debated whether there should be a community centre and mosque built in Lower Manhattan, O'Reilly declared that "Muslims killed us on 9/11" to back up his position that it's "inappropriate." "Oh my God!" Goldberg responded, before uttering a few words bleeped out. Muslims didn't kill us on 9/11?" O'Reilly responded. "Is that what you're saying?" Goldberg called O'Reilly an "extremist" as several of the co-hosts responded to O'Reilly's statement that "Muslims" -- and not Muslim radicals, extremists or terrorists -- killed "us" on 9/11. Behar, who had told O'Reilly that Muslims have a right to build it because "this is America," said that she no longer "want[ed] to sit here now" after the Fox star's remarks. Behar and Goldberg then left the studio.