PARIS, FRANCE - JANUARY 09:  The city of Paris unveils their tribute to Charlie Hebdo by hanging 'Paris est Charlie (Paris is Charlie)' and 'Nous Sommes Charlie (We are Charlie) signs in solidarity at Hotel de Ville following Wednesday's terrorist attack on the satirical newspaper Charlie Hebdo on January 9, 2015 in Paris, France. A huge manhunt for the two suspected gunmen in the deadly attack at Charlie Hebdo on January 7 in still underway.  (Photo by Kristy Sparow/Getty Images)