'Robbery - just outside our door

So around 10:00 PM Sung and I were just relaxing in our apartment when we heard a whole bunch of yelling outside, commotion that we aren't accustomed to hearing.  Sung went to the window and said - "Michael is being robbed"!  Michael is our downstairs neighbor and my heart started pounding through my chest. We rushed outside but it was too late, the car was speeding away.  I guess there was a group of 5 of them all standing outside of our front gate and a car had passed by them and circled the block and then came back.  As soon as it came back two guys jumped out, one with a knife.  The two girls and one other guy ran away and Michael and another teacher Greg got the brunt of it.  They started beating on them and demanding their phones.  Greg didn't have a phone or anything so they hit him even more to see if they could get something out of him.  Michael gave them his phone which I guess made them happy enough and then finally took off.  The girls had run to get the police (who are a block down the hill) and they arrived on the scene about 2 minutes after the car had taken off.  Michael and Greg conveyed the story to the police who listened but didn't offer any kind of further action.  It makes us re-think a lot of decisions we've made in the past.  No more walking up the hill at night when it's dark.  No lingering outside our front door even if it's for only a few minutes.  This city really is pretty crazy.  I hear a new robbery story every week and I try not to let them get to me too much but this one was way way way too close to home.