There has never been a case of a country where those in power (in our case, the rich) have been forced to serve the "greater good". It's a nice idea, if you want to rally people behind a change of leadership, but it will never happen. Whenever a new faction takes power, no matter what their professed interest in social justice, they instantly become "those in power". That makes THEM the ones with something to lose by changing the status quo.
No matter how much someone cries and moans that they will bring about change and fairness in the political system, it's ultimately just a smoke screen. Instead of listening to their promises, look at how much power they are asking for to accomplish "justice". This will give you some idea of the degree of dictatorship you will be facing when the revolution becomes a reality.
The Rev