It's because of complexity and lack of trust in the people perceived as running it (especially after 2008). Derivatives, high frequency trading, MBS, and a hand

It's because of complexity and lack of trust in the people perceived as running it (especially after 2008). Derivatives, high frequency trading, MBS, and a handful of other acronyms aren't understood by the vast majority of people. That alone wouldn't be an issue if the experts were at least perceived as trustworthy. This isn't unique and could happen in many industries. It's an image problem combined with extreme (intentional) complexity. It's also very deserved IMO.