More than a dozen trade unions tied to the AFL-CIO have announced a boycott of next year’s Democratic National Convention in Charlotte. In a statement, the unions, representing some 2.5 million workers in building and construction, say they will skip the convention in protest of labor policies in the gathering’s host state of North Carolina and also of Democrats’ record on the economy. Labor leader Mark Ayers wrote: “We find it troubling that the party so closely associated with basic human rights would choose a state with the lowest unionization rate in the country.”