With the unsettling rise of international tragedies also comes the unfortunately now all-too-familiar swell of collective showings of solidarity on social media. In the wake of such horrific events, Facebook profiles have been seen switching en masse to familiar symbols and hashtags displaying strength amid loss: #BostonStrong #HoustonStrong #WeAreManchester #Aleppo #PrayForParis #JeSuisCharlie. So when the Thanksgiving holiday weekend was sadly marred by news of yet another terrorist attack, this time in a Mosque in Egypt claiming...