That leads me to say: sweeping this kind of crime under the rug will not help. Instead, it will lead to a repeat of the Goetz vigilante incident in NYC in the early 1980s:
https://en.wikipedia.org/wiki/1984_New_York_City_Subway_shoo...
http://nypost.com/2011/12/23/one-of-bernhard-goetzs-victims-...
http://www.huffingtonpost.com/richard-feldman/bernie-goetz-t...
That last link in particular contains a stunning statement:
> The crime rate in the dangerous subways plunged dramatically — so much so the authorities even held back the numbers — the truth hurt too much.
The ugly and frightening truth about vigilantism is that it works. Please note I hate the idea of vigilantism and hope with every fiber of my being that things do not come to that, but it at first glance appears that things are headed in that direction, which I am immensely sad and scared to see.