They are familiar with police violence by now. And they know the smell of tear gas. But is it normal? Over the past few months, they have seen their city change from a dull business centre and shopping paradise into a breeding ground for uprise and violence - lots of violence. Who are those new Hong Kong heroes that so stubbornly go head to head with the Chinese dictatorship? Meet four of the frontline soldiers in their battle for true autonomy and freedom.