"Even if 90 percent of all Muslims are fine people, and we admit 10,000 refugees from the Middle East, does that mean that we need not be concerned about adding a thousand potential terrorists — even after we have seen in San Bernardino what just two terrorists can do?*"

Thomas Sowell, ladies and gentlemen. (https://www.desertsun.com/story/opinion/columnists/2015/12/1...)