Much of their ad revenue comes from the ability to highly target their ads, which comes from profiling people. If someone wants to buy an ad to display to all teenage girls in three counties in New York that searched for "OITNB" in the last six months, it can be done. Advertisers pay top dollar for that degree of targeting.
There are plenty of people who knew and kept quiet because speaking up would endanger their careers or even their lives / families lives.
Many of those people have flipped and are now speaking plenty.
The CIA has ALWAYS been an outlaw agency. It's creation was an attempt to get control over the OSS, which was out of control during WW II and had it's own agenda while still being part of our military. They got a lot of the "Nazi gold". CIA was created to try to rein them in, and it didn't work. They took the new powers and avoided any controls over their clandestine services.
CIA needs to be eliminated, useful functions moved to DIA and other agencies.
CIA brings in a large amount of money through illegal operations (trafficking drugs/people/organs/weapons/etc.).
It APPEARS that DJT has/is containing them and systematically eliminating their trafficking rings. If so, he deserves the Nobel just for this.
CIA has been involved with most of the horrible things that have happened in the world since its creation.