On Monday's "O'Reilly Factor," Bill O'Reilly continued defending his now-infamous appearance on "The View" last week.He said that the controversy surrounding the appearance -- where his statement that "Muslims killed us on 9/11" caused Joy Behar and Whoopi Goldberg to walk off the set -- had "entered the fabric of America." He also said that, while his comments may have been insensitive, they were true, and that there is a "Muslim problem" in the world:"If 'The View' ladies will not acknowledge that, that's their problem because most Americans well understand the danger in the Muslim world.