It appears we’re having trouble defining “class warfare.”
France’s Reign of Terror, in which people were sent to the guillotine because they were of the aristocratic class, was “class warfare.”
Vladimir Ilyich Lenin writing “The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation” was “class warfare.”
If one wants to relax the definition slightly, denigrating 47% of Americans because the 13% tax rate they pay consists of payroll taxes, while the 13% job creators pay consists of income taxes is “class warfare.”
To give three examples in one, here’s a quote describing poor-vs-rich “warfare” in parody form, making it rich-vs-poor “warfare” instead. Except that the parody may be “over the top”, reverting it back to poor-vs-rich “warfare.”
[QUOTE=Parodist]
Milton Ramner and his secretary at Bane Vultures, Inc. were doing a great job for Capitalism, taking over companies, laying off the American workers, and sending their jobs overseas. Since it was Ramner doing the important work, the shareholders he was helping expected only modest gain, and were delighted that Ramner earned $75 million per year from his efforts. The Evil Government confiscated $10 million of that (mainly to pay for free abortions for crackheads), but Ramner bore this injustice like a man. He gave much of the $65 million left over to his Church, and still had enough to buy Christmas presents for his lovely children.
But one day, an ungrateful angry club-wielding mob waging class warfare insisted that Ramner pay a tax as high as his secretary. The shameless, possibly foreign-born, Marxist leading the country went along, and Ramner was left with only $60 million per year.
Ramner saw no point in accepting such a meager reward, closed down his firm, and applied for food stamps. The two Jobs™ he’d Created™ (himself and his secretary) to do the onerous work of firing American workers still existed – but now these two tasks were themselves outsourced to workers in Pakistan. As he and his family munched on the dry crackers he’d bought with his food stamps (though garnished from the caviar stock he’d accumulated in happier days), Ramner told this reporter of the bitterness he felt as a victim of class warfare.
[/QUOTE]
What is NOT class warfare is to ask why billionaires pay a lower tax rate than their secretaries. Suppose a secretary pays 20% (including payroll taxes) on $75,000 and takes home $60,000. Is it really “warfare” to ask that the vulture capitalist who earns $75 million pay 20% and take home only $60 million? I’d rather take home $60 million than be guillotined; YMMV. 
If the gibberish here about class warfare continues, I’m afraid I’ll start a thread asking SDMB math experts to confirm whether $60 million is larger or smaller than $60,000.
Yes, $70 million is more than $60 million; replacing the former number with the latter will have “consequences” regardless of how it’s spent. Even paying for hookers and blow Creates Jobs™. And if (heaven forbid!) the tax burden were shifted so that poor families could give their children nutritious breakfasts with money the rich would otherwise spend on Job Creation or Destruction, that might be “meaningful” for those children even if they don’t grow up to be Job Creators™ themselves.
Finally, what is definitely “class warfare” is the peculiar insistence by right-wingers that centrists want to tax the rich because they’re Evil. In future I ask that this claim not be made without a link to a Doper posting that Rich are Evil. I think the only search hits that will appear will come from right-wingers pretending that others make the claim. (Obviously we must except specific persons. One might claim the Koch Brothers are malicious without impugning all rich people.)
Sam Stone seems uncertain why centrists want to tax the rich. Is it because they’re Evil? Are we jealous of their hookers and blow? Is it that we don’t approve of tithing the Mormon Church?
The reason is much more mundane, I’m afraid, and is the same reason Willie Sutton gave for robbing banks! 
It’s because that’s where the money is.