There are about 3 million Muslims in the United States. The FBI tells us there could be thousands of Muslims receiving instructions via the Internet from ISIS, based upon the FBI’s latest threat assessment. Lets assume that means only 2,000. We will ignore for now the thousands of Muslim Americans who don’t receive instructions from ISIS but sympathize with ISIS. Based just on 2,000 sleepers and sleepers-in-the-making, that meas that approximately 7% of the Muslim-American population are ISIS jihadists. Not good. But worse: ignoring the threat.