It's no different than the people who live in crime-ridden black communities. They want the police to clean up their neighborhoods, but will not cooperate with the police when it comes to providing information. They know who the criminals are. They know where they live. But they refuse to get involved. I have no sympathy for them either.
"Snitches get stitches". So it's usually the smart thing to do is just to stay out of it if it does not involve you.