I am being blackmailed/extorted. How do I report this crime?

While there is always the possibility that if you report the crime that your name will become known, the police and prosecutor can take steps to try to limit it (especially if the matter doesn't go to trial) but the truth is that once one person knows everyone will know. If you are really being blackmailed and/or extorted you should certainly contact the authorities. While I recognize that oftentimes privacy is an issue, you have to consider that giving into blackmail is never a good thing. There is a snowball effect that can hurt you much more.

In that case, see a local attorney. There is not enough here to comment intelligently as to the situation and wwhat you can or cannot possibly do.