Who is Trujillo from In the Time of the Butterflies and what is their importance?

General Rafael Trujillo is the Dominican dictator who ruled the nation from 1930 until his assassination in 1961. He was a greedy, cruel man, who desired total control over others. When Trujillo attempts to seduce Minerva, she refuses him. Trujillo later takes his revenge on the family by ordering the sisters killed.