- The Kakori Conspiracy took place on August 9, 1925, when HRA revolutionaries looted a train carrying railway funds near Kakori, Uttar Pradesh. - Key participants included Ram Prasad Bismil, Ashfaqullah Khan, Rajendra Lahiri, and Roshan Singh, among others. These individuals were later tried and executed for their involvement. - Surya Sen (Masterda) was a prominent revolutionary leader from Bengal known for leading the Chittagong Armoury Raid in 1930. He was not involved in the Kakori incident.