‘Guerilla first aid’: who are the Hong Kong volunteers braving protest chaos to treat the injured?

Dressed in bright yellow vests, they are seen darting through crowds, going to the aid of injured protesters.First-aid volunteers have become a common sight on Hong Kong streets over the past two months of protests, standing out from black-clad demonstrators.Many have crosses on their vests, helmets or backpacks as they dash to those who need help through a fog of tear gas while screams ring out. Sometimes, it is impossible to tell if they are cries for help or just shouts of anger directed at…