Just drop a Wikipedia link to MKULTRA or Mockingbird, etc. Focus on CNN story comments sections or posts from their anchor’s pages. These are people normies trust, so start giving them a reason to question their beliefs. Andersen Cooper is a good starting point!
FEEL FREE TO SHARE YOUR FAVORITE CIA-REDPILL LINKS BELOW SO WE CAN GET A GOOD LIST GOING!
...and then showing the video clip of (then) president Bill Clinton making a public apology statement at a news conference for the illegal human experimentation programs that were running during his administration- even after those programs had been ordered shut down.
{EDIT} And if you want to doubly freak out a particularly snide normie, show them the video clip of Bill Clinton telling a crowd of people that Hillary Clinton told him to tell the crowd that Hillary talked with the dead, Elenor Rosevelt.