Ride-hailing services such as Uber and Didi are a deflationary, VC-funded blessing and convenience to consumers (and lately, to Goldman Sachs). But to cab drivers, the services provided by the Ubers and Didis of the world are a mortal threat: in the past we have seen troubling images from many corners around the world, most notably Europe, when the taxi industry, threatened by the new service, take arms – in some cases literally – against ride-hailing apps.