that is actually something people are asking around here, but truth be told and it's a horrible excuse/reason..people are gun shy about saying or reporting anything. within the past couple years ago, someone spoke up on a bus about a mother yelling at or hitting a child, a couple stops later a car pulls up along side the bus and the person who spoke up got shot. the women in question called her brothers or someone else to say someone had 'dissed' her.
I know callling 911 is completely different than standing up to someone directly but it's different when you are in the situation....i know this is no where close to the same situation, but i was on a SEPTA bus and a girl(who of course i had a crush on) had asked a guy in the seat in front of us to either turn down his music or put his headphones in...he flat out ignored her. Being prince charming I went up to him and said, perhaps you didn't hear her ask but could you please turn down you music or put the headphones you have on your head on? He said 'NO'. I went right up to the driver and 'tattled'. I basically got chastised by the driver for doing what i did and got called names by the guy in question...he asked if i wanted to step outside....i looked at him and asked if he was 11(trying to impress a woman makes you do stupid things)
we get to my stop I get off and all of a sudden there he is along side me glaring at me and trying to intimidate me, i peeled off and went to my connection and he went off to his connection, i told him to have a great day...
but i lucked out...i could have and would have gotten my ass kicked but you just cannot do the right thing anymore, you put yourself in danger and it sucks ass...i'm not wired to allow things like this to go on, but sometimes you need to 'be smart'
again, calling 911 avoids this kind of interaction but in the heat of the moment, you really want to do the right thing, but sometimes what we think is the right thing isn't what should be done had we had the time to step back and evaluate the situation...
we can only hope that people are brought to justice at the time or, sadly, eventually