It's real fear.
Watch the Washington Post ~ their main printing plant is within easy walking distance from 5 mosques. You'll never see them saying anything bad about Moslems.
Ironic that this happened on the same day the Supreme Court ruled that, under the First Amendment, that silly pretend church can obscenely disrupt the funerals of fallen soldiers. (Not that I disagree with their ruling.)
The First Amendment is under real threat every day in this country, in ways that go unrecognized, unacknowledged and/or without alarm.