I am not going to take your money. Nor will 99.99999% of the Jews you meet. Sure, Madoff is Jewish. And he engaged in massive amounts of fraud.
But so did Ken Lay. And what was he? Born into a Baptist family.
Evil people are evil people, irrespective of religion. Don't single any Jew out as being evil as if being Jewish were a function of being evil. It runs contrary to all the gains that we've made as an enlightened society.
Tikkun olam, y'all. And shalom. It might not be in a language most Americans understand, but it's what is important.