William O. Douglas,
Benz v. Compania Naviera Hidalgo…
“ American unions, therefore, have a interest in the working conditions and wages of the seamen aboad this foreign vessel. Their interest is in the re-employment of the foreign crew at better wages and working conditions. And they peacefully picketed the foreign vessel to further that interest.The judgment we sustain today is one in damages against members of the American union who engaged in that peaceful picketing. ”
