As others have pointed out they frequently brag about their alleged successes. They also lack any oversight by congress or the presidency(in practice). They’re also know to have surveilled and threatened active members of congress.

They posed as a polio eradication effort to try and find Bin Laden, and failed nothing their stated aim and literally prevented the eradication of polio. It’s unforgivable.

I’m not against having intelligence as an arm of the state department and accountable to congress, but the CIA is a malignancy on the body politic.