Task: Text Categorization
Input (English): Cardinal Thomas Gibbons' defense of this organization would lead to Pope Leo XIII issuing an encylical, Rerum Novarum, supporting organizations of their kind. In contrast with its inclusive reputation, a chapter of this group was involved in the Seattle riots of 1886. Internal feuding following the failed Missouri Pacific railroad strike of 1886, and the emergence of a rival organization of skilled craftsmen, meant that by 1900, this organization was almost nonexistent. Name this labor organization that helped lobby for the Chinese Exclusion Act and, for 10 points, was founded by nine tailors in Philadelphia in 1869 and reached its peak under Terence V. Powderly.
Output (English): History