Hollande says "unity" helped people recover from horror of Jan 2015 attacks "What allowed us to overcome the shock of the attacks (...) is our unity, it is to be attached to values and not to let go of freedom", said former president François Hollande during a solemn tribute to the victims of the Jewish supermarket attack almost five years ago, on January 9, 2015. (COMPLETES VIDEO 1NI6O6_EN) IMAGES AND SOUNDBITES