jakarta indonesian authorities uncover group spread hate speech fake news online one many fear could undermine national unity indonesia ethnically diverse population 250 million people muslim significant minorities religions unity across archipelago priority governments generations three people arrest week suspicion part syndicate pay spread incendiary material online social media police say allow continue violate law also potential damage unity country say presidential spokesman johan budi budi say investigators determine motive behind campaign add police investigate issue right root national police spokesman awi setiyono say material involve religious ethnic issue post defamatory government officials decline comment motive say investigators still build case yet identify behind syndicate call saracen spread material police cyber crime unit say dozens facebook social media account sue spread material estimate 800,000 social media account setiyono say investigators uncover money transfer 5,000 pay spread material religious ethnic tensions flare capital jakarta year city elections pit ethnic chinese christian governor accuse insult islam muslim candidate authorities scramble remove hate speech social media online forums attempt defuse tension grow amount content encourage religious intolerance radicalism share search giant google say month work authorities tackle content deem offensive indonesians uncover syndicate spread hate speech online police