The Robbery (2014)

A young man, staring at his phone, was robbed and stabbed by a robber. Minutes later, staring at his phone, another man was tripped by the injured victim. The young man didn't help the injured. Instead, he took a photo and send a twitter. Then, the man who took the photo was also robbed and stabbed by the robber. The last thing this man saw before he passed out was that a girl, tripped by him, took a photo and left.