Pro-democracy protesters and police, now entering six months. police firing rubber bullets, water cannons and tear gas, surrounding hong kong's poly university, where 500 students are now trapped inside. protesters responding with bricks, bows and arrows and molotov cocktails. once again, the police firing water cannons. this isn't near the polytechnic university, that's under siege. these are the streets all around it. but now, many protesters are trapped, unable or unwilling to leave. their only way out -- arrest. overnight, those under 16 have been allowed to leave along with the injured, t...