Members of the Young Pioneers of America, a children's organization... News Photo - Getty Images

Members of the Young Pioneers of America, a children's organization affiliated with the Communist Party USA, picket in front of the Federal Building in Milwaukee to protest jailing of sixteen workers of a hosiery mill who violated a federal injunction against picketing, circa 1930. (Photo by Hirz/Archive Photos/Getty Images)

Members of the Young Pioneers of America, a children's organization affiliated with the Communist Party USA, picket in front of the Federal Building in Milwaukee to protest jailing of sixteen workers of a hosiery mill who violated a federal injunction against picketing, circa 1930. (Photo by Hirz/Archive Photos/Getty Images)