Complex sentence: Luckner Cambronne was a particularly fierce head of the "Tonton Macoutes" throughout the 1960s and the beginning of the 1970s, his cruelty earned him the nickname "Vampire of the Caribbean".
Split into simpler sentences: Luckner Cambronne was a particularly fierce head of the "Tonton Macoutes" throughout the 1960s and the beginning of the 1970s. His cruelty earned him the nickname "Vampire of the Caribbean".