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First Amendment Library:
Herman M. Knoeller


We brought this case here from the Supreme Court of Wisconsin, 314 U.S. 590, to canvass the claim that Wisconsin has forbidden the petitioners to engage in peaceful *438 picketing insofar as we have deemed it an exercise of the right of free speech protected by the Due Process Clause of the Fourteenth Amendment. Thornhill v. Alabama, 310 U.S. 88; American Federation of Labor v. Swing, 312 U.S. 321. The specific question for decision is the constitutional validity of an order made by the Wisconsin Employment Relations Board acting under the Employment Peace Act, Wisconsin Laws of 1939, c. 57. In deciding this question we are of course controlled by the construction placed by the Supreme Court of Wisconsin upon the order and the pertinent provisions of the Act.