The real problem in the USA is not wealth inequality, it is power inequality leveraged by wealth. The current structure of US media and politics are designed by the plutocrats to serve their interests, hence the Supreme Court Citizens United judgement regarding electoral funding.
(MSM is owned by them and their interests.)

In all cases under all circumstances the aggregation of political power within any small group, whether they be called the Corporate elite in the West today, or a politburo in a Communist state, the problem is the same, the aggregation of power to any one narrow interest group is inherently evil regardless of ideology or program and the entire US political system has been subverted and compromised by the Oligarchs and the basis of this power, in the Federal Reserve and the media cartels and on Wall Street must be tackled before anything will change.

The US constitution, the US system has a great deal of merit on paper but the system has been subverted and a restoration of constitutional, lawful government and a restoration of the rule of law and national sovereignty are required and until underlying structural issues are addressed the Presidential race will remain an empty political pageant and the Presidency itself will be a middle management position to be filled with a stuffed shirt who looks good on television and always remains obedient to the “factions” who put them in power.