The Empire State’s most powerful unions — including the United Federation of Teachers — are backing a “tax the rich” campaign that includes a proposal taking a bigger bite out of New Yorkers who are not millionaires. The unions representing government workers — listed as supporting the Democratic Socialists of America’s “Tax the Rich” rally in Albany Wednesday — stand to benefit from the billions of dollars in revenues raised by the potential massive tax hikes. The DSA is pushing one piece of