When you have a country of 1.3 billion people, a large portion of whom also have smartphones, who, unfortunately are also uneducated and gullible, you have the perfect environment to cause trouble.
Apps like WA and Telegram, enable this megaphone to reach every nook and corner of the country.
If tomorrow, there is a coordinated rumour mongering going on, leading to riots and deaths, dont you think those who started the rumour be caught?