Been saying this for a year or more.
The recent revelations have justified this.
Its not just the very top of the leadership, but the entire senior level who were implicated.
And those people had long service in the FBI, promoted the next rank below, and that rank the one below that, etc. This is how corruption is established. If it has gone on long enough - and in this case, well into the Bush administration - then you have to assume it goes all the way to the bottom.
I think it has been corrupt since Hoover in the 1920s, but that’s just me.