There was an attempt by the "Caribbean Legion" that failed at the time.
But what if he were overthrown by an anti-regime invasion, an uprising, or assassinated that year?
What does the future hold for the Dominican Republic in subsequent decades?
Less political murder by the government?
More or less street crime?
Less conservation of Dominican forests? [Trujillo, while a brutal dictator, has a reputation as a conservationist- mentioned in a Jared Diamond book I think]