This is where you want to be protesting. Capitalism works fine, if the goal is improving the living conditions of everyone. If you attack “Capitalism”, per se, in its role as an effective system for wealth creation, you create poverty. This should be clear enough.
What you need to be attacking is actual parasitism. Even JP Morgan Chase at least makes loans and capitalizes job-producing business expansions. Only central bankers produce nothing. Their whole mission is to cover up the lies told by bankers to the public. If by some unforeseeable miracle you could bankrupt JP Morgan Chase tomorrow, or Wall Street generally, all you would get is an increase in human misery, one whose epicenter will be among normal, struggling, working class Americans. The rich, being rich, suffer much less in economic downturns. Maybe they can’t afford that new yacht, but they have a whole different set of problems from people who were already struggling to pay their rent.
In fact, on balance, most economic downturns work to consolidate wealth. Formerly viable small business go belly-up, and get absorbed by larger corporations. Firms that have an unlimited expense account at the Fed can outsurvive companies which pay cash money.
If you want to target injustice, target the central bankers.
Again, my rationale is here: http://www.goodnessmovement.com/Page14.html
Marxian economic analysis was plainly wrong, but his basic idea that some super rich were and are abusing the system was spot-on.