Research such as the World Bank's influential report Growth is Good for the Poor has proved strong correlation between growth and poverty reduction.
The reason I'm often so vocal about this topic is that so many otherwise intelligent people have been cognitively captured by arguments from plutocratic think tanks. It's the same widespread misinformation that you see from religion, and it's maddening. A study by the world bank, Robert? Really? The report may very well be true under many conditions, but it is not what is happening in the US.
Look at the statistics. A record one in six Americans are now being served by an anti-poverty program. More Americans than before the recession are on Medicaid. There are a record number of Americans on food stamps. The number of people who live paycheck to paycheck has increased over the course of the recession. There are a ton of statistics showing this trend.
In fact, inequality is good, reflecting reward for talent and risk.
Increasing inequality is not good. It's a marker that has shown the collapse of civilizations back to antiquity. Stable/unmoving inequality is okay, depending on other variables like you've mentioned. When the ratio shifts, it's a signal within the noise that should raise alarms across the board.
On the reflection of talent and risk. Do you think the free market accurately finds the best compensation for every job? What would you say to the idea that those who hire/fire have leverage that in aggregate, cause compensation at the top to go up relative to production, while compensation at the bottom goes down relative to production? It's a shift that doesn't happen all at once, of course. A slow and steady drift.
I think it's a farce that people worship the free market as if it's an agency outside the influence of men. Or that some men don't have far more influence than others.
I don't have a fixed view on minimum wages, but these sort of vexed problems should consider all the evidence, modeling different outcomes, not simply jumping to politically driven conclusions.
A part of me thinks the problem can't be solved to the benefit of the middle class. At least until the rest of the world is equally as prosperous as the US, and minimum wages are roughly the same everywhere. In other words, it might get worse for the next century until it gets better.
Should a cashier be able to support a family and have a great benefits package?
I think that if the cashier is working full time, my tax money should not be required to put food on their table. This is especially the case if the employer is making enough profit to pay more. There's no way to wiggle around this point. It's also true that we could let the family starve, right? But then it's right back on the employer. Why couldn't they just pay a bit more? It's not as if the cashier job can be outsourced.