The charts above (from the Economic Policy Institute) show the reality of what Republican economic policy (commonly called "trickle-down economics) has done to this country. Note that before about 1980, wages rose at roughly the same rate as the increase in productivity. This helped middle class workers. But after 1980 (when the Republican majority was able to institute their economic policies), worker wages stopped climbing with productivity.
The second chart shows this benefitted the top 10% (and especially the top 1%), whose wages kept climbing. It was not good for the bottom 90% of workers. Their wages remained fairly flat -- as they were no longer getting a share of rising productivity.
This has resulted in a vast inequality of income and wealth between the richest Americans and the rest of America -- and that gulf of inequality continues to grow (since the GOP economic policies are still in effect). The new tax law will just exacerbate this inequality. It gives most of the benefits to the rich (and the corporations they control). It is making the U.S. a nation of "haves" and "have-nots".
The charts below show the inequality between the rich and the rest of America is not the only economic inequality that exists in the United States. There is also an inequality in income between white men and women/minorities (an inequality that persists through all levels of education). This is also fostered by the Republican economic policies, and they have stopped all efforts by Democrats to reduce those inequalities.
If the Republicans remain in power, all the inequalities will continue (and continue to grow). They don't want economic equality, because that would hurt their true constituency -- the rich. They only way to get a fairer economic policy, one that would benefit all Americans, is to vote for Democrats this November and flip the control of Congress.
