Talk to a lawyer, preferably one specialising in securities. Who knows you might get a settlement from mtgox and rest of the community terms and conditions.
You will not find any justice even if you deserve it on the forum.
I'm not sure how that would help. I don't see how you can launch a "securities" investigation into a trade platform that trades something technically, no different then baseball cards as far as giving monetary value. Their are places you can buy/bid on baseball cards (like MtGox) and companies that give up to date monetary values on baseball cards but if a theft of baseball cards happened, how would you investigate by means of securities law?