Radical muslims are here. Already.

According to the NY Post:

• The father of a murdered New Jersey family was threatened for making anti-Muslim remarks online — and the gruesome quadruple slaying may have been the hateful retaliation, sources told The Post yesterday.

  Hossam Armanious, 47, who along with his wife and two daughters was found stabbed to death in his Jersey City home early Friday, would regularly debate religion in a Middle Eastern chat room, one source said.

  Armanious, an Egyptian Christian, was well known for expressing his Coptic beliefs and engaging in fiery back-and-forth with Muslims on the Web site paltalk.com.

  He "had the reputation for being one of the most outspoken Egyptian Christians," said the source, who had close ties to the family.

Still think there's "no threat" from radical islam inside this country?