The FBI has been corrupt from the very beginning, starting with J. Edgar Hoover's blackmail files he kept on every politician inside and outside of Washington.
What most people do not realize is that what the FBI is doing to President Trump has been their S.O.P. since its formal founding in 1935.
I was a Police Officer for 32 years and never had but one dealing with them and it did not show but I do not disagree with you. Just before retiring I was questioned by two ex agents and they were good and almost right but they did lie.
I would advise anyone to have a witness anytime they talked to an agent just for self protection. I learned a few years back that they would not record you,one would ask questions and one would take notes. This way they manipulate what is said.I always respected them but should have been smarter.
See my 60 which I posted before I saw your 20 as I reacted to number 8. Then on further review number 50 adds to the fun.