Dressed in camouflage, the armed group moves silently to the doorway — before plunging through an apartment door and opening fire. Inside the abandoned building in central Taiwan, there are are only paper targets, and the weapons used are low-powered airguns that fire small pellets. This is the resistance, the civil defenders should Taiwan's army be overwhelmed in the face of attack by China, which wants to reunite the mainland with the self-governing island. "We won't surrender," says one of the masked men. "Anyone who invades will face us, and we'll use whatever we can to resist." He asked CBC...