this list is of 'conspiracy theories' proven to be true so keep that in mind when that term is shaken in your face; 

https://www.reddit.com/r/conspiracy/comments/160kw4o/conspiracy_theories_that_became_true/

conspiracy theories that became true

- The Tuskegee syphilis experiment, where hundreds of Black men were deliberately infected with syphilis and left untreated for decades by the U.S. government.

- The MK-Ultra project, where the CIA conducted mind-control experiments on unsuspecting subjects, using drugs, hypnosis, electroshock and other methods.

- The Watergate scandal, where President Nixon and his associates were involved in a cover-up of a break-in at the Democratic National Committee headquarters.

- The Iran-Contra affair, where the Reagan administration secretly sold weapons to Iran and used the profits to fund anti-communist rebels in Nicaragua.

- The Gulf of Tonkin incident, where the U.S. government fabricated an attack by North Vietnamese forces on American ships to justify the escalation of the Vietnam War

- The Operation Paperclip, where the U.S. government secretly recruited Nazi scientists and engineers after World War II.

- The Project Sunshine, where the U.S. government secretly collected and tested human remains, including those of babies, for nuclear research.

- The Operation Northwoods, where the U.S. military planned to stage false-flag attacks on American targets and blame them on Cuba to justify a war.

- The COINTELPRO, where the FBI infiltrated and disrupted various political groups, especially those related to civil rights and anti-war movements.

- The Operation Mockingbird, where the CIA influenced and manipulated the media to spread propaganda and misinformation3

- The Bohemian Grove, where the elite members of society gather for a secretive annual retreat in the California woods, involving rituals, speeches and networking.

- The Operation Gladio, where the CIA and NATO supported clandestine paramilitary groups in Europe to counter communist influence and stage false-flag attacks.

- The Project MKNAOMI, where the CIA developed and stockpiled biological weapons, including anthrax, plague and cholera.

- The Operation Snow White, where the Church of Scientology infiltrated various government agencies and stole or destroyed documents related to their activities.

- The Business Plot, where a group of wealthy businessmen planned to overthrow President Roosevelt and install a fascist regime in the U.S. in 1933.

- The Assassination of Martin Luther King Jr., where the U.S. government was found to be complicit in a conspiracy to kill the civil rights leader in 1999 by a civil court jury