Answer:
The FBI has kept files on United states citizens, mostly well known people or celebrities. They're also known to wiretap things without people knowing. A lot of times people have reported not knowing that the FBI wiretapped their houses. Viola Liuzzo was murdered by the Klu Klux Klan, turns out his murderer was an FBI agent.
Step-by-step explanation:
Those are just a few controversies, hope they help some :3