This case here on appeal under 28 U.S.C. § 1257 raises questions concerning the constitutional power of a state to apply its anti-trade-restraint law[1] to labor union activities, and to enjoin union members from peaceful picketing carried on as an essential and inseparable part of a course of conduct which is in violation of the state *492 law. The picketing occurred in Kansas City, Missouri. The injunction was issued by a Missouri state court.

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