Maybe some of the listings are biased, but I think the original source of the website was an insider at the State Department. I wouldn't put it past them re: the Trujillo assassination, considering other events that are 100% verified. Most of the events listed would have been considered conspiracy theory when they were actually happening. Over time, there have been numerous ex-insiders at the pentagon, state dept, etc that have come on record admitting this was true or leaked it to the press. Also much of the information became available through the Freedom of Information act. Just the mere existence of the School of Americas (School of Assassins), shows what our government has been up to for quite some time.
"In an official record of a White House meeting with Ford the next day, on January 4 1975, a rattled Henry Kissinger, the secretary of state and national security adviser, argues that the existence of the "family jewels" dossier, and its partial leaking, may turn into a major scandal -- with the FBI investigating the CIA.
What is happening is worse than in the days of McCarthy. You will end up with a CIA that does only reporting, not operations ... What Colby has done is a disgrace," Kissinger tells Ford. "All these stories are just the tip of the iceberg. If they come out, blood will flow. For example, Robert Kennedy [the former attorney general] personally managed the operation on the assassination of Castro."
The minutes state that the CIA "plotted the assassination of some foreign leaders including [Fidel] Castro, [Patrice] Lumumba [Democratic Republic of Congo] and [Rafael] Trujillo [Dominican Republic]."