- NEVER BREAK THE LAW
Don't set anything on fire or shoot anybody. You can stretch the law, in the exact same degree that the bad guys stretch the law to try to hide, but you can't break it. You can be creative, but not criminal.
- GO FOR BROKE
Don't tiptoe in. Many of these people are crazy billionaires who will throw insane amounts of money at any hint of push-back. Plan to help put people in prison. There are no "let's see what happens" in this play.
- FILE ALL REPORTS WITH MULTIPLE, UNCONNECTED, GROUPS
If you only report corruption to one entity, that entity may be corrupt and bury your report. If a billionaire is doing naughty things, they certainly have put a person inside the agency or office you are most likely to report the crime to. All reporting should be copied to a healthy mix of reporters, agencies, officials and consumer groups.
To protect yourself, if the situation is extra dicey, send an encrypted ZIP file, to many reporters, with all of your evidence in it.
Only give the password to 5 of your most trusted friends, with orders to post the password if you get in a jam.