Paris Under Attack: ISIS Supporters Celebrate On Twitter As More Than 100 Killed, Others Held Hostage Paris is under attack, and President Francois Hollande has declared a national state of emergency. ISIS supporters, however, are celebrating on Twitter as people are killed in multiple bomb and gun attacks in the city.by Vincent Lanaria
WATCH: Runner Spends Year Using Exercise Tracker to Create Elaborate Stick Figure Art on City Streets
