NEW YORK - At a dinner in New York in early March, Chicago Teachers Union prez Karen Lewis gave her version of her back-and-forth over longer school days with Chicago Mayor Rahm Emanuel. She boasted of the day when, she says, he said "F*** you, Lewis," and she used "colorful language" in her response over longer school days. She told the group of "radical teachers" that city officials will do "whatever you let them get away with."