Facebook's leader has a message for his Muslim followers: "You are always welcome here."
A few nights ago, Republican presidential front-runner Donald Trump created an uproar (and received some applause) when he suggested Muslims should be banned from entering the United States. Even without The Donald's demagoguery, this isn't an easy period for Muslim Americans. Brutal ISIL terror attacks in Paris last month and last week's shooting in San Bernardino, California, apparently by Islamic extremists, have generated fear and suspicion of Muslims throughout the Western world—and some of that sentiment has even appeared on Facebook.