This raises an interesting cross section of moral issues. Obviously end-to-end encryption is good for a lot of reasons. But end-to-end encryption is one of the reasons that these lynchings have been able to happen. These kinds of lynchings have been going on forever, but Whatsapp and mobile phones have allowed these rumours to spread faster than ever before, and for mobs to form so much easier.
Does the right to privacy outweigh people's right to travel without fear of being lynched?