LAST week, we had written on the rise of lynch mobs, the spreading of hate and false rumours through social media, and the complicity of the government. This week I will look at a particular feature of the WhatsApp platform that helps in spreading hate, and why the BJP government is not asking them to change this feature.At the heart of the problem with WhatsApp, which is now owned by Facebook, is the feature that anybody’s mobile number can be put in a WhatsApp group, even without the consent of the owner.