Wall Street is a hot topic nowadays due to many notorious activities such as financing entire political campaigns, insider trading and outright fraud. All of these are valid problems that should be sorted out and fought, but people should not be pinning these problems on what causes the everyday struggle of their life.
Nowadays, there is no reason for people to blame others for their financial situation. Big bankers on Wall Street (and i use wall street as an example, there are plenty of other valid examples) are not sitting in a room trying to plot on how to make people poor. In fact they are doing what you should be doing, trying to prosper as much as possible. Though they may be using unethical and illegal tactics to do so, sot saying that i condone their actions but their mentality is correct.
I guess what i am trying to get at is if you stop the corruption on wall street, it will not suddenly make your life easier. The only person responsible for their situation in their life is yourself.