In response to the tragic attacks in Paris Friday night , Facebook has added a photo filter so users can easily show their support for France.<br />David Marcus , Facebook's vice president of Messaging Product, wrote: "Show your support for the people of Paris by temporarily updating your profile picture with this new template we created.<br />Over the past 24 hours, Facebook , with its more than 1 billion users worldwide, has served as clearinghouse for many users hoping to check on the safety and whereabouts of friends and family living in or visiting France.<br />In addition, some users have also reported that Snapchat is offering a filter that includes a Paris flag image and the message "Pray for Paris."