It was involved in several Supreme Court decisions, including Munn v. Illinois.  
It is currently led by Kermit W. Richardson, and Ignatius Donnely's weekly newspaper The Anti-Monopolist grew out of this organization's rise.  Originally founded by a government clerk from Minnesota this group was modeled on the Masonic order, but soon expanded and Oliver Hudson Kelley's agencies soon numbered over 800,000 members.  It was involved in several Supreme Court decisions, including Munn v. Illinois.  FTP, name this agrarian political and social movement also know as the "Patrons of Husbandry."
It is currently led by Kermit W. Richardson, and Ignatius Donnely's weekly newspaper
Granger movement (accept early buzz of Patrons of Husbandry)