Donald Trump created a media firestorm when he called for a moratorium on Muslim immigration to the US. Trump was denounced as a xenophobic racist -- as if Islam was not a religion, but a race (go figure). Trump's announcement was apparently prompted by a terrorist attack in San Bernardino, California, where two Islamic terrorists killed fourteen people. The San Bernardino incident followed in the wake of a coordinated strike by ISIS in November that slaughtered 130 people in Paris, France.
http://www.americanthinker.com/articles/2016/01/islam_and_the_first_amendment.html