Secret societies: regulations applied only to one class of oath-bound associations, having a membership of 20 or more persons, where the class regulated has a tendency to make the secrecy of its purpose and membership a cloak for conduct inimical to the personal rights of others and to the public welfare. New York ex rel. Bryant v. Zimmerman, 278 U.S. 63 (1928).
Securities: a prohibition on the sale of capital stock on margin or for future delivery which is not applicable to other objects of speculation, e.g., cotton, grain. Otis v. Parker, 187 U.S. 606 (1903).
Syndicalism: a criminal syndicalism statute does not deny equal protection in penalizing those who advocate a resort to violent and unlawful methods as a means of changing industrial and political conditions while not penalizing those who advocate resort to such methods for maintaining such conditions. Whitney v. California, 274 U.S. 357 (1927).
Telegraph companies: a statute prohibiting stipulation against liability for negligence in the delivery of interstate message, which did not forbid express companies and other common carriers to limit their liability by contract. Western Union Teleg. Co. v. Commercial Milling Co., 218 U.S. 406 (1910).
[1105] Hartford Steam Boiler Inspection & Ins. Co. v. Harrison, 301 U.S. 459 (1937).
[1106] Smith v. Cahoon, 283 U.S. 553 (1931).
[1107] Mayflower Farms v. Ten Eyck, 297 U.S. 266 (1936).
[1108] Buck v. Bell, 274 U.S. 200 (1927).
[1109] Skinner v. Oklahoma, 316 U.S. 535 (1942).
[1110] Yick Wo v. Hopkins, 118 U.S. 356 (1886).