Raise taxes on the rich? “Class warfare” the Republicans rail. Any discussion of inequality, says Mitt Romney, should be held privately “in quiet rooms.” Yet the Romney agenda for the country opens a new offensive in class warfare — only on the side of the few, not the many. America’s inequality has already reached extremes not seen since 1929 before the Great Depression. In 2010, the richest 1 percent captured an obscene 93 percent of the nation’s income growth. The top 1 percent now has as much wealth as 90 percent of Americans. As Warren Buffett, one of America’s richest …