In four months, the Hong Kong protests have spiralled into some of the city’s worst civil unrest on record. The city has become the scene of regular clashes between tear gas- and gun-wielding police and civilians armed with Molotov cocktails and projectiles. A violent, radical minority of protesters have smashed storefronts, destroyed public infrastructure and made arson attacks on political targets – only to have pro-establishment vigilantes entering the fray and retaliating.A ban on face…