The students began

The protesters oppose Beijing's decision in August that all candidates in Hong Kong's first direct election in 2017 for the territory's top post must be approved by a mostly pro-Beijing committee. They accuse the central government of reneging on a promise that the chief executive would be chosen through "universal suffrage." The students began occupying the area outside the entrance of the imposing government compound housing Leung's office late Wednesday, at times reluctantly moving to allow police vehicles and an ambulance to enter. As Thursday wore on, they grew increasingly resistant to allowing more vehicles in after police hand-carried in tubs labeled "rubber batons" and tear gas.