The Texas Ranger Division of the Texas Department of Public Safety is a law enforcement agency with statewide jurisdiction. Over the years, the Texas Rangers have investigated crimes ranging from murder to political corruption. They have acted as riot police and as detectives, protected the Texas governor, tracked down fugitives, and functioned as a paramilitary force both for the republic and for the state. The Texas Rangers were unofficially created by Stephen F. Austin in 1823 and formally constituted in 1835. The Rangers were integral to several important events of Texas history and some of the best-known criminal cases in the history of the Old West.