Following the 1868 election, many residents were frustrated by the radical Republicans that had taken control of most county offices. The KKK began whitecapping throughout Arkansas, and Governor Clayton declared martial law in ten counties, later adding four more. In Mississippi County, one of the martial law counties, a racially and politically charged event called the Black Hawk War took place in 1872 that is indicative of Reconstruction. County registrar Charles Fitzpatrick rode around with an armed group of blacks, collecting taxes and issuing threats to his opponents. Fitzpatrick accused Sheriff J. B. Murray of misappropriating county funds, and the allegation became a heated argument. When the two met to shake hands at the Osceola Post Office, Murray punched Fitzpatrick, who responded by shooting and killing Murray. Upon Fitzpatrick turning himself in, a trial was held but the judge adjourned the tense court for two days before ordering Fitzpatrick to disperse his company of 200 armed men. Fitzpatrick complied, and the judge went across town to disperse a crowd of KKK members, led by former Confederate Captain Charles Bowen. Both parties dispersed but ran into each other south of town and shots were fired. Fitzpatrick was never convicted and was nominated for the state legislature, but was defeated by Hiram McVeigh.