Got 2 examples for you, 1 is how pay increases are being handled at a majority of non-union corporations, 1 how a % of tax, while generating more dollars from the rich affects the poor more.
Corporations are doing % pay raises now. take a 2% pay raise. 1%-3% is very common.
$30,000 per year worker earns an additional gross of $600
$100,000 per year worker earns an additional gross of $2,000
$250,000 per year worker earns an additional gross of $5,000
$1,000,000 per year worker earns an additional gross of $20,000
$5,000,000 per year worker earns an additional gross of $100,000
Lets just simulate a flat tax style of number for calculating simplicity, say 20%
$30,000 per year worker pays $6000
$100,000 per year worker pays $20000
$250,000 per year worker pays $50000
$1,000,000 per year worker pays $200000
$5,000,000 per year worker pays $1000000
Now, with the money left over after the taxes, who is hurt more, who will have difficulties raising their children, who will have issues putting food on the table, who can still buy any luxery that they want?
You combine the 2 and what you get is a decreasing middle class, bring home pay stagnation, and welfare dependents that still work. Oh, and btw, I forgot to state in the first example, chances are the $1000000 and $5000000 workers are also getting bonuses and stock options on top of that pay...