I really have problems with this. First and foremost are the ethical issues. Money should not be your motive for setting things right, rather a sense of duty.

You seem to have a compulsion to do this. Is it attention seeking? It doesn't seem healthy to me and I wonder if any of this is delusional. Regardless, talk to your therapist or psychatrist about this obsession.

If you in fact are in such a position to know about these multiple cases of law breaking, you are hanging with the wrong crowd and not living in the safest of locations.