This is very hard topic to speak of, we had this type of discussion in my final day of sociology class today, and most of them said, that if they saw someone beating the shit out of somebody or robbed. They would of mind there business and look the other way, while others would call the cops.
@ the bold I mean yeah, if you can't do the time, then don't do the crime. But you got to ask yourself. If you was about to be sentence 25 to life, unless you make a plea bargin of 3 years, if you give up information? Now most dudes would say fuck it, I'll give up information. While some would take the hard 25 to life.
But now, if is was family member or friend who been victim of crime or killed in a crime process, most said, they will file a police report while others in my class said they find the person themselves and kill them.