The US has had a massive shift of wealth to the top 1% in recent years, and this is self defeating to capitalism as it devastates the discretionary spending of the middle classes.
That has less to do with the minimum wage and more to do with:
1. The tax on capital gains is 14% while the highest rate on ordinary income is 39%, so those earning income through salary pay but CEOs, trust fund babies and wall street gurus who earn most of their income through capital gains pay 14%
2. Carried interest. This is a complex financial trick used by hedge fund operators to put their income into the lower capital gains tax rate.
http://www.taxpolicycenter.org/briefing ... terest.cfm3. Crony capitalism and sweetheart deals with the government. Both political parties are deeply involved.
4. Overregulation which massively increases compliance costs while being minimally effective strongly benefits big business who has the expertise to efficiently deal with the compliance while strongly inhibiting their smaller competitors. No surprise big business and their friends on capital hill love to work together to get these things passed.
5. Globalization which allows the fat cats to outsource middle class jobs to India and China at a fraction of the salary. It's not just manufacturing and call centers that are going overseas, it is also high paying computer programing and chemistry jobs.
6. Public knowledge of CEO incomes has apparently backfired as instead of being used by stockholders to demand value for their investment, has actually been used by CEOs and their cronies on the boards to justify massive salary increases for the CEO, board members and other top executives.
The decline of unions has also contributed to income inequality. However, unions are incredibly and deservedly unpopular right now. There has been a long series of problems that they have contributed to or caused directly. The latest is the pension time bomb facing both municipalities and industries which are heavily unionized (ex. the auto industry). Basically the unions and the politicians/management negotiated wonderful pension deals which sounded great at the time: generous benefits, early retirement ages, low contributions from employees etc. What they didn't negotiate was how to pay for those benefits. The union leadership negotiated for pensions that depended on the continued financial health of the entity with which they were negotiating. Now that many of those entities have become financially challenged, the retired union members are in for massive pension cuts. The average union worker was not a financial expert and didn't understand the risk of this type of pension funding but the union leaders knew and they didn't care. They just wanted to be re-elected to their cushy high paying leadership positions and knew that they would be retired with their golden parachutes long before the time bomb exploded. (Yes the politicians/company management are equally responsible for this mess, but politicians are excepted to do this kind of crooked thing. The union membership trusted that their leadership was working in the best interest of the average union employee. So there is a feeling of betrayal.)