#PrayforParis - A series of terrorist attacks occurred in Paris on the night of 13 November 2015. Several individuals, governments and other organizations around the world expressed solidarity with France and with the victims in reaction to these events. In the hours following the attack, certain Parisians used social media, especially the Twitter hashtag #PorteOuverte as in French means Open Door, to offer strangers stranded by the attack overnight a shelter. The hashtag has been on the trend worldwide. A modified version of London-based French graphic designer Jean Jullien's International Peace Symbol, in which the center gap was modified to match Eiffel Tower, was extensively distributed. The symbol was widely shared with #PeaceForParis, #PrayForParis, #PrayForFrance and #JeSuisParis.