419 U.S. 215 95 S.Ct. 409 42 L.Ed.2d 399 AMERICAN RADIO ASSOCIATION, AFL-CIO, et al., Petitioners,v.MOBILE STEAMSHIP ASSOCIATION, INC., et al. No. 73-748. Argued Oct. 21, 1974. Decided Dec. 17, 1974. Syllabus Respondents, an association representing stevedoring companies, and a shipper, sought injunctive relief in an Alabama state court against picketing of a foreign-flag ship […]