Three days after ISIS militants carried out a deadly terror attack in broad daylight, Indonesians poured out by the thousands onto the streets of this tropical city for an exuberant day of recreation.
"ISIS is more dangerous in the case of Indonesia...because they perceive Indonesia as not Dawla Islamiya, not an Islamic country," said Jakarta police chief Tito Karnavian in an interview with CNN.
Unlike al Qaeda, Karnavian says ISIS legitimizes the murder of fellow Muslims.
And yet, law enforcement authorities warn ISIS represents a new generation of terrorists that could be more lethal than their al Qaeda predecessors.